What are some good resources for learning threaded programming? [closed] - multithreading

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With the rise of multicore CPUs on the desktop, multithreading skills will become a valuable asset for programmers. Can you recommend some good resources (books, tutorials, websites, etc.) for a programmer who is looking to learn about threaded programming?

Take a look at Herb Sutter's "The Free Lunch Is Over" and then his series of articles on Effective Concurrency.

Joseph Albahari wrote a good overview of Threading in C# here:
http://www.albahari.com/threading/

I've honestly never read it myself, but Concurrent Programming in Java is a book I've heard recommended by several people.

http://www.yoda.arachsys.com/csharp/threads/

I write about multithreading and concurrency in C++ on my blog. I'm also writing a book on concurrency in C++: C++ Concurrency in Action.

I've read (most of) Java Concurrency in Practice by Brian Goetz, which is very good.
There is obviously a Java-based theme running through the book (using Java specific implementations of threads, locks etc.), but pretty much all of the principles can be applied to other languages.
The author's home page contains a list of articles he has written, some of which include threading related stuff. Maybe start there and if you like his style, buy the book.

For a great guide and reference for concurrency programming in C# (or .NET in general) I'd recommend the MSDN What Every Dev Must Know About Multithreaded Apps article by Vance Morrison on MSDN. It contains a great deal of best-practice information and caveats about multithread development

I maintain a linkblog for concurrency articles, blogs, and projects at:
http://concurrency.tumblr.com
I usually post a link or two per day on a variety of topics (threads, actors, locking, parallel programming) in a variety of environments (Erlang, Java, Scala, .NET, C++, Ruby, Python, etc).

It's Delphi specific, but no reason why the concept wouldn't apply to any other language!
Multi Threading Tutorial

http://www.cilk.com/multicore-e-book/
That's a nice general overview of the sitution, if you're looking for tuorials and books it might be best to specify a language as a starting point so you can mess around with some code.

The Erlang programming language provides an easy-to-use style of concurrent programming. You may never actually use Erlang, but the concepts are transportable to other languages. You might want to read the book Programming Erlang: Software for a Concurrent World .
Fans of functional programming claim that there is no need to learn anything new. Just use a pure functional language, and the compiler or interpreter will automatically parallelize everything. So you might want to learn Haskell, OCaml, or another functional language.

I don't know what exactly you are looking for, but if you are doing WindowsForms development the following blog post is worth every minute reading:
WinForms UI Thread Invokes: An In-Depth Review of Invoke/BeginInvoke/InvokeRequred

I think Boost.Threads is a great C++ concurrency library to learn, especially if you just want to get started in writing multithreaded applications. The code is very succinct and easy to understand, plus the next C++ standard will likely include a threading library based on Boost.Threads (tutorial: http://www.ddj.com/cpp/184401518)

If you want to have a go at doing a highly parallel version of a simple task, or see real solutions, you could do worse than look at the wide finder project. Basically it's about how to do parallel regex matching of log files efficiently, but trying to add as little code as possible.
Participants have submitted solutions in many different languages and the performance results are posted. The original project has now finished and there is now wide finder 2 taking the work on.
CodingHorror has a good introduction to wide finder.

For a rich, thorough treatment of the subject, with a good balance between computer science and practice, I recommend The Art of Multiprocessor Programming. A lot of examples are in object-oriented code, i.e. Java, with other languages scattered throughout. It just depends on the topic being covered. What I really love about this book is that it discusses how common algorithms should be implemented in a concurrent design. Of course, there's so much more!
For general concepts and a treatment of pthreads, I really like Programming with POSIX Threads. Being the library and API that it is, it's in C.
For Windows and C# developers, check out Joe Duffy's blog. Joe works on parallel libraries, infrastructure, and programming models in Microsoft's Developer Division. He has a book coming in Nov. 2008 titled Concurrent Programming on Windows (Amazon link).
Also, don't miss the Godfather's blog: Herb Sutter's Sutter's Mill. He has links to all his articles in Dr. Dobb's Journal and more. Click his Concurrency category.

CPU manufacturers websites have some interesting content:
http://developer.amd.com/documentation/articles/Pages/default.aspx#parallel
http://software.intel.com/en-us/multi-core
Also Intel's opensource threading library has some good references:
http://www.threadingbuildingblocks.org/

If you work with C#, the book "C# 2008 and 2005 threaded programming", by Gaston C. Hillar - Packt Publishing - http://www.packtpub.com/beginners-guide-for-C-sharp-2008-and-2005-threaded-programming/book , will help you.
Highly recommended for C# programmers, because you can download the code with funny examples that exploit your multicore computer.
The book is a nice guide with a lot of code to practice. It tells stories while it explains the most difficult concepts.

Related

Graphical Programming Language [closed]

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In control engineering or instrumentation, I see Simulink or LabVIEW(G) is pretty popular.
In ESL design, I see that Agilent SystemVue is gaining some popularity.
If you see the well established compiler theroy, almost 100% is about the textual language. But how about the graphical language?
Is there any noticable research or discussion about the graphical programming language? In terms of
Theory about Graphical Language - syntactic/semantic analysis and whatever relevant
expressiveness (Actually, I asked a question about it at SO - What do you mean by the expressiveness of a programming language?)
Possibility of the Graphical language
...
Or what do you think about the Graphical Programming Language?
DRAKON is basically a flowchart optimized for readability.
http://drakon-editor.sourceforge.net/DRAKON.pdf
There are editors that can generate source code in C, C++, Python and Tcl.
For example:
http://drakon-editor.sourceforge.net/python/python.html
I heard about one such language called DRAKON. It was developed for the Buran space project and now it seems to rebirth (language, not Buran =)). The only problem is that the most of materials about this language is in Russian. I'll give you some links anyway:
Article in Russian Wikipedia.
OberonCore forum DRAKON subsection in Russian.
DRAKON + Oberon = DRON visual programming language in English.
Wouldn't know anything about theory, but Lego MindStorms has a great graphical programming environment for programming the NXT robot toolkit (based on LabView components) that is extremely fun to use.
For kids it seems to be very easy environment in which to learn how to program by for example tweaking the functionality of existing programs or following instructions. When English (or any other written language for that matter) is not all that well understood the graphical environment makes it much easier to use than any written textual language.
The graphical language is perhaps "simple" in the sense that there is only one loop construct, one switch construct and a set of "high" level functions but i find it fit for the purpose.
From a slightly different angle, this is in issue tackled in the interfaces for graphical programming tools for creative use, such as MaxMSP and Isadora - it might be useful to see how they handle the issues involved.
Prograph is pretty cool - it's a general purpose graphical programming language and it uses a data flow paradigm.
See also Marten.
Quartz Composer presents a graphical interface for constructing image composition workflows. (I think that would be considered a "programming language".)
A little late but I can also recommend the IBM / Rational Rose Realtime (commercial). Be aware that it is something different than "Rational Rose".
http://www-01.ibm.com/software/awdtools/developer/technical/
http://nimotoons.com is a 100% graphical development language based on functional languages.
it is from UPC and still under construction
You should also try YAWL which has a pretty good background in workflow programming in a graphical way, you can see:
http://www.yawlfoundation.org/
See workflow patterns which is a really good theoretical basis, I think, to approach graphical programming.
You could try Cameleon: http://www.shinoe.org/cameleon which seems to be simple to use.
Its written in C++ but can call any type of local or distant programs writen in any programming language.
It has a multi-scale approach and seems to be turing complete (this is a petri net extension).
sheers,
Myosis.sh

What is so special about Smalltalk? [closed]

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In every technical publication, and on this site too, people are always comparing OO languages to Smalltalk. My experience is in Java: is Smalltalk so important that I should study it?
Smalltalk was one of the earliest object-oriented (OO) languages (with others like Simula and Eiffel) and can be said to be extremely "pure" in an OO sense:
Everything is an object and objects are only communicated with via the sending of messages
No primitives (no ints, booleans etc)
No control structures (no for, while, if etc). Sounds impossible but it's true!
No statics
It also pioneered some other, now common, stuff:
the virtual machine (and JIT compilation)
Debugging by inspection
"Hotswapping" running code
the modern IDE
Closures
Duck typing
Model-View Controller (MVC) architecture for UIs
Test-driven development (TDD) and agile methodology
And there are other things connected with Smalltalk which didn't really make it into the mainstream:
"Image"-based system rather than file-based.
Object-oriented databases
And it's fair to say that the Java collections API and the apache-commons collections API are heavily influenced by Smalltalk.
I wouldn't say that you should learn Smalltalk per se, but a familiarity with the fundamentals of these features (now present in many other languages) is surely advantageous to you.
Note that there are currently only 123 questions on here about the language, which was originally intended as an educational language (i.e. aimed at children) by its creator, Alan Kay. It is not particularly heavily used anymore. That's not to say it isn't used. JPMorgan, for example, has a large exotic derivatives risk-management system written in it.
Smalltalk has many brilliant innovations - things we're all taking for granted today, including:
being the first ever IDE
providing programmatic support for a GUI with a mouse If you learn Smalltalk GUI programming, you really will have understood MVC properly.
being built out of a small number of powerful ideas that work together extremely well
The Smalltalk way isn't to crash out on unexpected behaviour - it's to adapt. If you send a message to an object that doesn't understand it, the debugger comes up and invites you to write that method... so it provides excellent support for incremental development.
The IDE, the app that you're writing and your data are all part of the same system - so you can write your own tools and debug instrumentation far more easily.
The TDD toolset in Smalltalk is still better than any other language (see below).
Squeak Smalltalk has quite a bit of cutting-edge design research:
the morphic UI - you can get familiar with the concept of "liveness"
the seaside web framework - learn what a continuation server is and how it's radically different
Squeak has a strong connection with the OLPC software (one laptop per child) project - and could yet have a big influence on the world.
Find out what a "trait" is...
Play with the radical 3D immersive environment called Open Croquet.
Because Smalltalk is a smaller, simpler and more consistent language, with it's own built-in environment it's a much less confusing place to start teaching OOP. People who go this route end up being better Java, Ruby and C# programmers because they can learn basic OOP without all the messy inconsistencies of mainstream languages.
Some commercial Smalltalks have amazing, multi-node distributed OO database environments. I'm thinking about Gemstone.
Want to know the difference between Model-View-Controller and Model-View-Presenter - look at Dolphin Smalltalk...
The single most important reason to learn Smalltalk today is that extreme programming and scrum both got invented in the Smalltalk community... and the highly interactive style of programming you experience in Smalltalk is simpler, more powerful and direct than anything you can do with Java or C# or Ruby... and you can't really understand how well agile methods can work until you've tried to do extreme programming in Smalltalk. Few other languages (no mainstream ones anyway) have a comparable feature set.
... to really understand what TDD can be you need to use SUnit. JUnit just shows you where your tests failed. SUnit actually allows you click into the debugger at the point where the test failed and see the actual objects and how they're connected so you can see, live in the debugger how the code failed and fix it right there.
Yes, Smalltalk is so important you should study it. Why? You can understand object-oriented programming in pure, simple form. What people forget is that the Smalltalk-80 "Blue Book" has only about 90 pages devoted to the language—the language is just that simple. The other 300 pages talk about the predefined class hierarchy, which is a masterpiece of design for a class-based, object-oriented language that uses single inheritance. You will get a much deeper understanding of objects (e.g., classes are objects, and they have metaclasses, and so on off to infinity... except the knot is carefully tied to keep the system finite) than you would ever get from studying a hybrid language like Java or C++. Smalltalk matters not just because of its history but because of its simplicity:
Simple enough so you can understand the entire language and the libraries
Shows one idea (objects are all you need) pushed to its logical extreme
Everybody has something to learn from Smalltalk!
Smalltalk is one of the first two original OOP languages, the other being Simula-67. Consequently, there are two large families - the statically typed model centered around method invocation, pioneered by Simula (C++, Java, C# all belong here), and the dynamically typed model centered around message passing, pioneered by Smalltalk (Python, Ruby belong here).
Today, Smalltalk isn't particularly important on its own - there are some people still using it to write stuff, but it's definitely not mainstream. Learning it will give you some insight in how and why OOP evolved, however.
I spent about 5 minutes in a presentation at a conference last month on Smalltalk's history and influence. See Image-based development with Smalltalk. One of the more foreign concepts to today's programmers is the "image-based" development. There are some good analogies, including a DBMS and a spreadsheet.
Yes. Download the seaside one-click image, start using it with the tutorial from James Foster and you will learn at least:
how web applications should be build
how debugging is supposed to work
I agree with the others. I'm not sure if it's important per se, but it is COOL (imho).
I love that there are no loops or conditionals in the language. If-then-else is a message sent to a boolean object. Objects of type True do one thing, objects of type False do another. (Yes, True and False are subtypes of Boolean, with a single value each, true and false respectively).
It starts out being kind of counter-intuitive, but it does give you a very interesting, and deep, view of how OO programming should work...
Not only was it one of the first, Smalltalk remains to this day a paragon of OO language design. The more popular languages that came later — C++, Java, even Objective-C — all have more primitive object-orientation and are more restrictive than good old Smalltalk. Smalltalk had pervasive first-class objects, great support for runtime introspection, very natural use of duck typing and closures that worked better than I've seen in any non-functional language. I mean, we're talking about a language that had no native control structures (if, while, etc.) but was able to create them out of its object system in a way that worked seamlessly. How cool is that?
I wouldn't recommend Smalltalk for any intensive desktop app development these days (there just isn't a viable implementation IMO), but if you want to see how OO was meant to be and maybe pick up some ideas you can use in your apps, Smalltalk is a great place to look.
If you only know one object-oriented language you should consider learning a second and a third and a fourth in order to gain a broader perspective on programming with objects. Learning Smalltalk will stretch your brain because a lot of the familiar concepts we're used to in other languages (e.g. if-then-else, for(;;), while(), etc) are not there in Smalltalk. There are equivalents, obviously, but Smalltalk does things differently, and learning about different ways to do things is always a good idea.
Good luck.
I've just started to revive my interest in Smalltalk, and in my opinion, there are a few compelling things that are special about Smalltalk:
Highly productive development
environment
Built-in support for Agile/Extreme
programming methodologies
"Pure" object model
Easy to use graphics framework
None of these make it especially useful for people who are not in the software development business. My first exposure to it was when I saw a user interface for an embedded device prototyped on a PC using Smalltalk. This allowed the user interface to be modified and tested very quickly, and when completed, provided the embedded developers an "executable specification" that was far more precise than any document. I'm surprised I haven't seen this technique used far more often than I've observed in my travels during the last 20 years.
Using Smalltalk as a prototyping tool is where my interest lies: I think that given a new problem, different approaches to solving it can be tried and validated very quickly and easily in a Smalltalk environment, and once the desired solution is found it should be relatively mechanical to convert it to Java/C++/C# etc. etc. In fact, for repetitive sorts of things, it might well be possible to use Smalltalk to generate code for parts of the solution in some other target language.
The other thing about SmallTalk is that its alumni include Kent Beck and Ward Cunningham. Their work with SmallTalk spawned automated xUnit testing, software design patterns, CRC Cards and other practices which ed into XP/Agile, etc. So it could be argued that SmallTalk has been a major contributor to the modern programming landscape.
Just two comments:
Smalltalk is not object "oriented", is real objects, only objects and messages in the environment.
Smalltalk is not a language, is an environment that has a language (of the same name), but most of the "magic" here is thanks to the environment (the image).

What to learn? Lisp or OCaml or...? [closed]

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I already have a few languages under my belt (in a rough order of expertise): Python, C, C++, PHP, Javascript, Haskell, Java, MIPS, x86 assembler. But it's been almost 2 years since I learned a new one, and I'm starting to get the itch. I have a few criteria:
Must (repeat: must) have a free Linux implementation
Should be different from the languages I already know. In other words, it should have features that get me thinking about solving problems in a new way.
Should have some potential for practical use. It doesn't need to be the next Java, but this rules out Brainf* and Shakespeare :) I don't really care how many job postings does it have, but real-world apps and libraries are a plus.
Should have at least just enough free learning materials to get me started in it.
I was thinking Lisp (CL? something else?) or OCaml. I already have some experience with functional languages with Haskell (yes I know that Lisp/OCaml are multi-paradigm). I'm not an expert - e.g. parts of code from Real World Haskell can still contort my brain, but I understand the basic concepts and some advanced ones (functors, monads).
Which one to choose? Any other languages that I have overlooked? Also, could you please include some useful links to good books/tutorials etc.
Neither Lisp nor OCaml is super far afield from what you already know. Here are four suggestions chosen partly for intrinsic interest and partly to stretch your horizons.
A logic programming language, probably Prolog. I haven't found good materials online, but the book The Art of Prolog by Sterling and Shapiro is excellent. The more basic textbook by Clocksin and Mellish is also good. The main point of interest is programming with relations, not functions.
A pure object-oriented language, either
Smalltalk or Self. If you've only used hybrid object-oriented languages you'll be amazed how beautiful pure object-orientation can be. I've linked to the Squeak implementation of Smalltalk. I personally would recommend learning Smalltalk before tackling Self; there's a very large and active community and the software is well developed. Self stands on Smalltalk's shoulders and is an even more inspiring design, but the community is much smaller. For those who have access to the ACM Digital library I recommend the excellent talk by Dave Ungar at HOPL-III; the paper is also pretty good.
The Icon programming language has two great things going for it; a powerful and unusual evaluation model with implicit backtracking, and a user-extensible model of string processing that beats regular expressions all hollow. I'm sorry to say that Icon has never quite kept pace with the times, and of all my recommendations it is the least practical. In fact I fear the language is moribund. But it will stretch your mind almost as much as Haskell, and in wildly different directions. Icon is still very useful for string-processing tasks of modest size.
You can read about Icon string processing in an article by Ralph Griswold from Computer Journal.
The Lua programming language is my last and least radical suggestion. Its interest is not so much in novel language features or paradigms but in the superb engineering of the language and its implementation. Lua occupies a number of niches, including scripting, gaming, string processing, and lightweight functional programming. But its main point of interest is its seamless integration with C, and to get the full benefit, you should bind a C library into Lua.
The HOPL-III web site also contains an excellent talk and paper about Lua.
Both Common Lisp and Ocaml are certainly useful to learn. If you already know Haskell, CL might be the more different experience.
SBCL and Clozure CL are both very useful implementations of Common Lisp on Linux. (Overview about various implementations: Common Lisp survey.)
As a starting point I would recommend to use Peter Seibel's excellent book Practical Common Lisp, that is both available online and printed.
Community pointers are here: CLIKI.
Prolog may be what you are looking for.
Edit
The first commenter is right, my answer was pretty short and not very useful, so:
My preferred implementation is SWI-Prolog. I personally learned from Prolog Programming for Artificial Intelligence. It's style is pretty clear and it contains many examples, but I don't own any other book on logic programming (it's a shame, really :) so I have no basis for comparison.
Erlang is pretty interesting to learn because of its super efficient concurrency model, and the ease with which you can write distributed systems (for an example of this, CouchDB was written in Erlang). It's a dynamically typed functional language, but you can also write code in a procedural fashion. The tutorial I learned it with is called "Getting Started with Erlang", which covers just about every part of the language.
If you want to make use of your Java and functional programming knowledge, and you want to learn a Lisp, then try Clojure.
The implementation is free and cross-platform including Linux, because it runs on the JVM. Being a Lisp, it's different enough (in useful and wonderful ways) from most other languages to make things interesting. Some features such as immutable data structures, multimethods, metadata support, focus on safe concurrency, etc. are fairly novel compared to the languages you listed. Clojure is geared heavily toward being a practical and useful language rather than an academic one. It's a functional language but not "pure", which is arguably a good thing. You can also trivially make use of any Java library from within Clojure.
Clojure is a new language, so the only book out so far is Programming Clojure, but it's a pretty good one. There's also a wiki which may not be entirely up-to-date, because the language is still evolving very quickly. The mailing list and IRC channel are very friendly, welcoming places to ask questions. The official website is also a good resource, of course.
I'm going to recommend something that I haven't yet tried, but plan to, so you have to judge for yourself this one. There's this language, called IO, which is particular in that its prototype-based, like JavaScript, but also borrows concepts from many other languages. Its job market it's probably nonexistent, but I thought I mention this language.
Otherwise, a language from the Lisp family may be pretty different from what you already know. In that regard I'd recommend Scheme, which is, in my opinion, more elegant than Common Lisp. The new concept that you might found interesting in Scheme is continuations.
If you take the Scheme path, make some time to watch these videos from 1986. They're amazing.
Have a look at Smalltalk ! Either Cincom VWST or Smalltalk/X - dont bother with Squeak as the interface is terrible). VAST is good also but really only Windows centric. And dont bother about the sceptics that pore scorn on Smalltalk -- they arent using it and are stuck in the morass of edit-run-debug cycle languages and multiple dispirt linked libraries. :-)
Why these Smalltalks - well, they come complete wth excellent IDE, GUI tools builtin, best debugger you will ever see, online help, and is totally independent of the underlying OS. Eg a ST/X programming running under Linux can be transfered ( source code) to Windows ST/X and it should execute.
ST/X is free with only a very minor licience restrictions, Cincom offer a free NC ( Not Commercial ) version that is NOT restricted. I use ST/X as I prefer the default look & feel
it offers. Their IDE interfaces are very similar.
Languages without a IDE & GUI tools are just wasting your time as the world is really GUI, no matter how terrific the underlying language is. Eg Ruby is great, but with no IDE or easy GUI tools its really frustrating.
Smalltalk is not easy to get into, and its not perfect,(what language is?) but very satisfying to learn & use. And now that the hardware and operating systems have finally caught up with Smalltalks needs . very efficient.
I second Rainer's Common Lisp recommendation.
CL has all the things you're looking for and will provide a genuinely novel experience that will also make your coding efforts and approaches in other languages better.
But bring patience and persistence, you will have to grasp a lot of concepts that will seem alien at first.
You could try Tcl. It was sufficiently different to provoke an adverse reaction in my brain, so I can't really tell you how I found it different, but there's been a lot of good stuff written in it (maybe less nowadays than earlier).
C# has a free implementation in Linux under the Mono project, and it arguably is a very marketable skill unless you're completely anti-Microsoft.
My favorite C# book is Pro C# 2008 and the .NET 3.5 Platform, Fourth Edition.
If you're really want exotic, F# is an OCaml style language that runs on the .NET platform and mono, and is getting a lot of attention these days.
http://msdn.microsoft.com/en-us/fsharp/default.aspx
Books for F#:
http://www.amazon.com/s/ref=nb_ss_gw?url=search-alias%3Daps&field-keywords=f%23
Of the suggestions I've seen so far, I like Lisp (see Secko) and Smalltalk (see brett), as both will give you another view of languages. Prolog even more so.
Another language that is different is Erlang -- I haven't had a chance to learn it yet, but it handles concurrency in a different way. The best link I can give you is the main website.
In terms of recommendations, Lisp is good both because it is currently used and because it is very old. The others you will have to look at sources and see which one appeals the most.
Try FORTRAN, then? I hear it's still actively used by the scientific and mathemematical communities, plus it should be dissimilar enough to be a learning challenge.
Compilers:
http://gcc.gnu.org/wiki/GFortranBinaries
http://www.g95.org/
http://www.fortran.com/compilers.html
http://www.thefreecountry.com/compilers/fortran.shtml
IDEs:
http://www.eclipse.org/photran/
http://force.lepsch.com/ (FORTRAN 77 only)
Tutorials:
Introduction to Modern FORTRAN: http://www-uxsup.csx.cam.ac.uk/courses/Fortran/
FORTRAN 90 Tutorial: http://www.cs.mtu.edu/~shene/COURSES/cs201/NOTES/fortran.html
You could also learn Visual Basic.NET, in case you ever get forced to maintain that. Evidently mono has a working Linux implementation of it:
http://www.mono-project.com/Visual_Basic
Factor is pretty radically different from everything you said you know, and also everything else listed. It's stack-based, like Forth, but has a fairly comprehensive library and a lot of interesting features.
Ada is very practical -- there's a compiler based on gcc -- but also quite different from the other imperative languages you know. I find the type system a bit stifling, but it was worth learning something about.
Lisp is a great HLL, it has everything that other languages lack. In my opinion, this is a very good language that can "satisfy" any programmers needs.
Perl is also a HLL like Lisp, it's interesting and fun at the same time. It derives from C so you can pick it up as you go. It can be hard sometimes and some people tend to get lost while learning, but it's worth knowing.
Both languages are free of use and come with Linux.
Links
Lisp:
If Lisp is so great,
An Introduction and Tutorial for Common Lisp
Perl:
PERL -- Practical Extraction and Report Language
Books
On Lisp - Great book by Paul Graham on the Lisp language. It's free and you can download it here.
Scala has been very good for making me see programming in a new light. I haven't used it for anything worklike yet, but it's still affected how I write code in other languages - not just Java, but PHP. I recently wrote a simple parser for a WordPress plugin, and the code is vastly more functional and immutable than it would have been six months ago, and better for it, despite the lack of enforcement in PHP.
The only other language to have affected the way I work so dramatically is Perl, nearly a decade earlier. Perl has contributed a lot to the way I pseudo-code, even if I never touch the language itself.
Many people compare the functional aspects of Scala to Haskell. You may even imagine that knowing Haskell means you already know all Scala could teach you, but I don't believe that. The way Scala combines OO and function has a way of making it seem like that's actually the truest form of both of them.
Like you, I have over a dozen languages under my belt. While shopping for something to play with for writing a cross-compiler, I ran across ML and family. Many very good ideas there, and they have taught me to write code is a much different way; for example, my JavaScript now has a decidedly functional bent.
After toying with OCaml under Windows a while (and getting frustrated with stability issues), I ran across F#, an offspring of OCaml. The two are quite similar (can cross-compile a lot of code), but OCaml apparently has a really good macro system (P4) and type-classes (in support of writing "strongly typed" operators against generic types), while F# has excellent support for asynchronous and parallel operations, monads, units-of-measure for numeric types, as well as cleaner OO syntax and awesome IDE integration (VS2008 & will be released in-the-box with VS2010). I much prefer F# these days, since I have access to the whole .NET runtime and loads of 3rd party libraries. In fact, I write most of my one-off and utility code in F# now; for me, its generally much more productive than C++, JavaScript, C#, PowerShell, or anything else.
F# works fairly well under Mono on Linux, and has a good following there. The compiler and runtime will be open sourced once stable (released with VS2010), and the developers consider Mono support enough of a priority for it to be seriously considered for non-Microsoft use.

Reference material for LabVIEW [closed]

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I'm supposed to learn how to use LabVIEW for my new job, and I'm wondering if anybody can recommend some good books or reference/tutorial web sites.
I'm a senior developer with lots of Java/C#/C++ experience.
I realize that this question is perhaps more vague than is intended on stack overflow, so how about this? Please answer with one book or web site and a brief description. Then people can vote up their favourites.
It will take some training and some time to learn the style needed to develop maintainable code.
Coming from Java/C#/C++, you probably have a good idea of good software architecture. Now you just need to learn the peculiarities of LabView and the common pitfalls.
For the basics, National Instruments offers training courses. See if your new employer can send you to a Basics I/II class to get your feet wet. They offer some online classes as well. Following classes, you can sign up to take tests for certification.
Get an evaluation copy of Labview from National Instruments; they have a well maintained help file that you can dive right into, with example code included. Look at "Getting Started" and "LabVIEW Environment". You should be able to jump right in and become familiar with the dev environment pretty quickly.
LabVIEW, being graphical is nice, but don't throw out your best practices from an application design point of view. It is common to end up with code looking like rainbow sphaghetti, or code that stretches several screens wide. Use subvi's and keep each vi with a specific purpose and function.
The official NI support forums and knowledgebase are probably the best resources out there at the moment.
Unofficial sites like Tutorials in G have a subset of the information found on the official site and documentation, but still may be useful for cross reference if you get stuck.
Edit: Basics I/II are designed to be accessible to users without prior software development experience. Depending on how you feel after using the evaluation version, you may be able to move directly into Intermediate I/II. NI has the course outlines available on their website as well, so you know what you're going to cover in each.
LabVIEW for Everyone is recently revised and quite comprehensive. Other than the free stuff available on the Web, this is probably the best place to start learning the language.
The LabVIEW Style Guide is a great book on how to organize and arrange your code and files for maximum benefit.
Object oriented programming is a recent addition to LabVIEW. The LVOOP white paper explains much about how it works and why the way it is the way it is.
It's a bit out of date, but LabVIEW Advanced Programming Techniques by Bitter, Mohiuddin and Nawrocki is still full of useful stuff.
The National Instruments forums are a great place to go for basic help. The LabVIEW Advanced Virtual Architects (LAVA) is the community forum for advanced topics.
Tutorials in G, also check out the webring.
-Adam
The official NI support page and support forums are hard to beat.
It really helps having a guru around for LabVIEW.
'Arc the daft' pretty much nailed exactly what one should try to do to learn LabVIEW. However, I would not skip Basic's I and II. The classes do teach basic programming concepts and are geared to non-programmers, however they do cover the IDE extensively. The LabVIEW IDE is strange coming from a text based language and spending the time in the class learning it with an instructor can really accelerate your learning.
I would skip Intermediate 1 if you are a seasoned developer. Intermediate 1 tries to teach software engineering practices in the span of a three day course. If you are studying to get your CLD you need to know the course and the terminology for the exam, otherwise I wouldn't spend my time or capital in the course.
Subscribe to the Info-LabVIEW mailing list. It's got a lot quieter in recent times as the NI and LAVA forums have grown in popularity, but it's still read by some very experienced and helpful people, including people at NI, and if you can't find what you need elsewhere then a good question will usually get a good answer.
The NI style guide, as already mentioned, is a good reference - re-read it as you learn about more of the things it covers, it contains some densely packed good advice.
Personal top tips: look at the supplied example code (although it's not necessarily perfect); learn to use queues and notifiers as soon as possible; don't dive in to using event structures and control references until you've figured out what you can and can't do without them; and start small and simple - you should find it easy to reuse this code later on by repackaging it into subVI's as the scope of your ambitions increases. And have fun!
For me the best way to learn LabVIEW was by analyzing the in-build examples. The best forums are NI Developer Zone Community and LAVA Forums
LabVIEW is really easy to work with but the tricky bit is to know how to design your application so that it will not becaome a spaghetti. Once you get the basics (e.g. LabVIEW Introduction Course) learn how to use design patterns, events, queues, typedefs and references. Use modular architecture, avoid big structures, try 'writing' your code in small window.
It is also important to know the differences between LabVIEW versions (full/pro, and ver 7.1.1, 8.2, 8.5, 8.6, 2009), how to use version control system with the vi's (binary files), and how to keep your files in project so that you can easily reuse any code and be "DRY" (don't repeat yourself), how to build executable and what LabVIEW RunTime Engine it needs (for customers), what is DAQmx and how to use it, what are VISA drivers and which version is correct for you settings, how to use Measurements & Automation program..
When I started with LabVIEW a few years ago I was given a link to the LabVIEW Graphical Programming Course. It covers the basics and having a sound knowledge of other programming languages I think helped me pick things up quickly.
I would start with the LabVIEW wiki.
Specifically, LabVIEW Tutorial. There are lots of online references and links to LabVIEW reference books. Welcome to the world of LabVIEW!
I would suggest you start with LabVIEW for Everyone. Its a good book which covers the basics of LabVIEW well.

Language Books/Tutorials for popular languages

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It wasn't that long ago that I was a beginning coder, trying to find good books/tutorials on languages I wanted to learn. Even still, there are times I need to pick up a language relatively quickly for a new project I am working on. The point of this post is to document some of the best tutorials and books for these languages. I will start the list with the best I can find, but hope you guys out there can help with better suggestions/new languages. Here is what I found:
Since this is now wiki editable, I am giving control up to the community. If you have a suggestion, please put it in this section. I decided to also add a section for general be a better programmer books and online references as well. Once again, all recommendations are welcome.
General Programming
Online Tutorials
Foundations of Programming By Karl Seguin - From Codebetter, its C# based but the ideas ring true across the board, can't believe no-one's posted this yet actually.
How to Write Unmaintainable Code - An anti manual that teaches you how to write code in the most unmaintable way possible. It would be funny if a lot of these suggestions didn't ring so true.
The Programming Section of Wiki Books - suggested by Jim Robert as having a large amount of books/tutorials on multiple languages in various stages of completion
Just the Basics To get a feel for a language.
Books
Code Complete - This book goes without saying, it is truely brilliant in too many ways to mention.
The Pragmatic Programmer - The next best thing to working with a master coder, teaching you everything they know.
Mastering Regular Expressions - Regular Expressions are an essential tool in every programmer's toolbox. This book, recommended by Patrick Lozzi is a great way to learn what they are capable of.
Algorithms in C, C++, and Java - A great way to learn all the classic algorithms if you find Knuth's books a bit too in depth.
C
Online Tutorials
This tutorial seems to pretty consise and thourough, looked over the material and seems to be pretty good. Not sure how friendly it would be to new programmers though.
Books
K&R C - a classic for sure. It might be argued that all programmers should read it.
C Primer Plus - Suggested by Imran as being the ultimate C book for beginning programmers.
C: A Reference Manual - A great reference recommended by Patrick Lozzi.
C++
Online Tutorials
The tutorial on cplusplus.com seems to be the most complete. I found another tutorial here but it doesn't include topics like polymorphism, which I believe is essential. If you are coming from C, this tutorial might be the best for you.
Another useful tutorial, C++ Annotation. In Ubuntu family you can get the ebook on multiple format(pdf, txt, Postscript, and LaTex) by installing c++-annotation package from Synaptic(installed package can be found in /usr/share/doc/c++-annotation/.
Books
The C++ Programming Language - crucial for any C++ programmer.
C++ Primer Plus - Orginally added as a typo, but the amazon reviews are so good, I am going to keep it here until someone says it is a dud.
Effective C++ - Ways to improve your C++ programs.
More Effective C++ - Continuation of Effective C++.
Effective STL - Ways to improve your use of the STL.
Thinking in C++ - Great book, both volumes. Written by Bruce Eckel and Chuck Ellison.
Programming: Principles and Practice Using C++ - Stroustrup's introduction to C++.
Accelerated C++ - Andy Koenig and Barbara Moo - An excellent introduction to C++ that doesn't treat C++ as "C with extra bits bolted on", in fact you dive straight in and start using STL early on.
Forth
Books
FORTH, a text and reference. Mahlon G. Kelly and Nicholas
Spies. ISBN 0-13-326349-5 / ISBN 0-13-326331-2. 1986
Prentice-Hall. Leo Brodie's books are good but this book
is even better. For instance it covers defining words and
the interpreter in depth.
Java
Online Tutorials
Sun's Java Tutorials - An official tutorial that seems thourough, but I am not a java expert. You guys know of any better ones?
Books
Head First Java - Recommended as a great introductory text by Patrick Lozzi.
Effective Java - Recommended by pek as a great intermediate text.
Core Java Volume 1 and Core Java Volume 2 - Suggested by FreeMemory as some of the best java references available.
Java Concurrency in Practice - Recommended by MDC as great resource for concurrent programming in Java.
The Java Programing Language
Python
Online Tutorials
Python.org - The online documentation for this language is pretty good. If you know of any better let me know.
Dive Into Python - Suggested by Nickola. Seems to be a python book online.
Perl
Online Tutorials
perldoc perl - This is how I personally got started with the language, and I don't think you will be able to beat it.
Books
Learning Perl - a great way to introduce yourself to the language.
Programming Perl - greatly referred to as the Perl Bible. Essential reference for any serious perl programmer.
Perl Cookbook - A great book that has solutions to many common problems.
Modern Perl Programming - newly released, contains the latest wisdom on modern techniques and tools, including Moose and DBIx::Class.
Ruby
Online Tutorials
Adam Mika suggested Why's (Poignant) Guide to Ruby but after taking a look at it, I don't know if it is for everyone.
Found this site which seems to offer several tutorials for Ruby on Rails.
Books
Programming Ruby - suggested as a great reference for all things ruby.
Visual Basic
Online Tutorials
Found this site which seems to devote itself to visual basic tutorials. Not sure how good they are though.
PHP
Online Tutorials
The main PHP site - A simple tutorial that allows user comments for each page, which I really like.
PHPFreaks Tutorials - Various tutorials of different difficulty lengths.
Quakenet/PHP tutorials - PHP tutorial that will guide you from ground up.
JavaScript
Online Tutorials
Found a decent tutorial here geared toward non-programmers. Found another more advanced one here. Nickolay suggested A reintroduction to javascript as a good read here.
Books
Head first JavaScript
JavaScript: The Good Parts (with a Google Tech Talk video by the author)
C#
Online Tutorials
C# Station Tutorial - Seems to be a decent tutorial that I dug up, but I am not a C# guy.
C# Language Specification - Suggested by tamberg. Not really a tutorial, but a great reference on all the elements of C#
Books
C# to the point - suggested by tamberg as a short text that explains the language in amazing depth
ocaml
Books
nlucaroni suggested the following:
OCaml for Scientists
Introduction to ocaml
Using Understand and unraveling ocaml: practice to theory and vice versa
Developing Applications using Ocaml - O'Reilly
The Objective Caml System - Official Manua
Haskell
Online Tutorials
nlucaroni suggested the following:
Explore functional programming with Haskell
Books
Real World Haskell
Total Functional Programming
LISP/Scheme
Books
wfarr suggested the following:
The Little Schemer - Introduction to Scheme and functional programming in general
The Seasoned Schemer - Followup to Little Schemer.
Structure and Interpretation of Computer Programs - The definitive book on Lisp (also available online).
Practical Common Lisp - A good introduction to Lisp with several examples of practical use.
On Lisp - Advanced Topics in Lisp
How to Design Programs - An Introduction to Computing and Programming
Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp - an approach to high quality Lisp programming
What about you guys? Am I totally off on some of there? Did I leave out your favorite language? I will take the best comments and modify the question with the suggestions.
I know this is going to seem old-fashioned, but I don't think much of using online tutorials to learn programming languages or platforms. These generally give you no more than a little taste of the language. To really learn a language, you need the equivalent of a "book", and in many cases, this means a real dead-tree book.
If you want to learn C, read K&R. If you want to learn C++, read Stroustrup. If you want to learn Lisp/Scheme, read SICP. Etc.
If you're not willing to spend more than $30 and a few hours to learn a language, you probably aren't going to learn it.
These are all really good, written by academia and (some) are books (an unpublished oreilly book --translated from French, but no issues I've found), for example). I've *'d my favorite ones that helped me the most.
ocaml :
*Introduction to ocaml
Using Understand and unraveling ocaml: practice to theory and vice versa
*Developing Applications using Ocaml - O'Reilly
The Objective Caml System - Official Manual
A Concise Introduction to Objective Caml
Practical Ocaml
Haskell :
Explore functional programming with Haskell
*Real World Haskell
*Total Functional Programming
For C#:
CLR via C#
C# in Depth
For C++, I suggest Accelerated C++ by Koenig and Moo as a beginning text, though I don't know how it would be for an absolute novice. It focuses on using the STL right away, which makes getting things done much easier.
Haskell:
O'Reilly Book:
Real World Haskell, a great tutorial-oriented book on Haskell, available online and in print.
My favorite general, less academic online tutorials:
The Haskell wikibook which contains all of the excellent Yet Another Haskell Tutorial. (This tutorial helps with specifics of setting up a Haskell distro and running example programs, for example.)
Learn you a Haskell for Great Good, in the spirit of Why's Poignant Guide to Ruby but more to the point.
Write yourself a Scheme in 48 hours. Get your hands dirty learning Haskell with a real project.
Books on Functional Programming with Haskell:
Lambda calculus, combinators, more theoretical, but in a very down to earth manner: Davie's Introduction to Functional Programming Systems Using Haskell
Laziness and program correctness, thinking functionally: Bird's Introduction to Functional Programming Using Haskell
Effective Java is a must but I recommend being comfortable with Java first to fully understand the examples.
Ruby
The Free Ruby on Rails Training Online Course by Sang Shin Isn't too bad. It also has a decent amount of further reading links on each subject in the course
I'd add Bruce Eckel's programming books:
Thinking in Java (print version: 4th edition; 3rd. ed. is online: http://www.mindview.net/Books/TIJ/)
Thinking in C++ (2nd ed, freely available online: http://mindview.net/Books/TICPP/ThinkingInCPP2e.html
In general, his "Books" page (http://mindview.net/Books/) is a good resource. The freely availabe books can also be found at http://www.ibiblio.org/pub/docs/books/eckel/
Can't believe nobody has mentioned the Perl Best Practices. There's also a Twitter feed that delivers one PBP per day.
I learned Perl from Robert's Perl Tutorial, which I recommend, but it hasn't been updated since 1999. A newer recommended tutorial is Steve's Perl Tutorial.
For web development with Perl, the clear winner is Catalyst, and the Catalyst wiki is the starting point for learning.
For Lisp and Scheme (hell, functional programming in general), there are few things that provide a more solid foundation than The Little Schemer and The Seasoned Schemer. Both provide a very simple and intuitive introduction to both Scheme and functional programming that proves far simpler for new students or hobbyists than any of the typical volumes that rub off like a nonfiction rendition of War & Peace.
Once they've moved beyond the Schemer series, SICP and On Lisp are both fantastic choices.
check out the programming section of wikibooks
Many of them are fully formed, and quite a few have more advanced sections (which are in varying states of completion) on specific functionality.
also, w3 schools has a great php tutorial and reference section
their html and css sections are good for reference too.
C++
Thinking in C++ by Bruce Eckel
C++ Coding Standards by Herb Sutter & Andrei Alexandrescu
The first one is good for beginners and the second one requires more advanced level in C++.
C - The C Programming Language - Obviously I had to reference K&R, one of the best programming books out there full stop.
C++ - Accelerated C++ - This clear, well written introduction to C++ goes straight to using the STL and gives nice, clear, practical examples. Lives up to its name.
C# - Pro C# 2008 and the .NET 3.5 Platform - Bit of a mouthful but wonderfully written and huge depth.
F# - Expert F# - Designed to take experienced programmers from zero to expert in F#. Very well written, one of the author's invented F# so you can't go far wrong!
Scheme - The Little Schemer - Really unique approach to teaching a programming language done really well.
Ruby - Programming Ruby - Affectionately known as the 'pick axe' book, this is THE defacto introduction to Ruby. Very well written, clear and detailed.
For Javascript:
Javascript: The Definitive Guide
Pro Javascript Techniques
For PHP:
PHP Objects, Patterns, and Practice
For OO design & programming, patterns:
Object-Oriented Software Construction (a bible, maybe the Head First OO would be nice, I don't know it)
Head First Design Patterns (I so love this book)
Design Patterns
For Refactoring:
Refactoring: Improving the Design of Existing Code
Working Effectively with Legacy Code
For SQL/MySQL:
Joe Celko: Tree and Hierarchies in SQL (only on a specific subject, but I found it interesting)
Pro MySQL
C Primer Plus, 5th Edition - The C book to get if you're learning C without any prior programming experience. It's a personal favorite of mine as I learned to program from this book. It has all the qualities a beginner friendly book should have:
Doesn't assume any prior exposure to programming
Enjoyable to read (without becoming annoying like For Dummies /
Doesn't oversimplify
Let's not forget Head First Java, which could be considered the essential first step in this language or maybe the step after the online tutorials by Sun. It's great for the purpose of grasping the language concisely, while adding a bit of fun, serving as a stepping stone for the more in-depth books already mentioned.
Sedgewick offers great series on Algorithms which are a must-have if you find Knuth's books to be too in-depth. Knuth aside, Sedgewick brings a solid approach to the field and he offers his books in C, C++ and Java. The C++ books could be used backwardly on C since he doesn't make a very large distinction between the two languages in his presentation.
Whenever I'm working on C, C:A Reference Manual, by Harbison and Steele, goes with me everywhere. It's concise and efficient while being extremely thorough making it priceless(to me anyways).
Languages aside, and if this thread is to become a go-to for references in which I think it's heading that way due to the number of solid contributions, please include Mastering Regular Expressions, for reasons I think most of us are aware of... some would also say that regex can be considered a language in its own right. Further, its usefulness in a wide array of languages makes it invaluable.
Common Lisp
For a good reference of CL check out Common Lisp the Language, 2nd Edition
For Objective C:
Cocoa Programming for Mac OSX - Third Edition
Aaron Hillegass
Published by Addison Wesley
Programming in Objective C,
Stephen G Kochan,
Head First Javascript is a good intro to JS for beginning programmers - it creatively explains basic programming concepts using JS syntax. The Head First series is based on researched techniques for helping you learn and remember new information. They have you do a lot of exercises and puzzles which might seem juvenile, but really help cement the knowledge in your brain.
One exercise I really liked was after they explained data types, they show a picture of a city street and say "label all the data types you can find in this picture." So the blinker on a car is a boolean, the sign on the store is a string, and the address is a number. That helped me get the idea of how to translate real information into a program.
Based only on this book, I'd say the Head First series is a great way to learn something the first time, but the story-like format they have would make them difficult to use as references.
The Ruby Way by Hal Fulton
The Ruby Way cover http://rubyhacker.com/trw2cover.gif
Python: http://diveintopython.net/
JS: a re-introduction to JavaScript is the introduction to the language (not the browser specifics) for programmers. Don't know a good tutorial on JS in browser.
Great idea by the way!
Given recent developments I think it's important to include the recent explosion of free online course offerings from universities and private companies. The new boston is a tutorial site i've always used for numerous languages for years, great beginner point.
http://www.udacity.com/
https://www.coursera.org/
http://www.coursehero.org/
http://www.codecademy.com/
http://mitx.mit.edu/
http://www.khanacademy.org/
http://thenewboston.org/
I second Kristopher's recommendation of K&R for C.
I've found the "Essential Actionscript 2.0" book quite useful for AS coding (there's an AS3 version out now I believe).
I've found that having real books to thumb through is more helpful than an online reference in some cases. Not really sure why though.
hmm, I don't know if I would say that online materials are useless, but I do agree that there is something about books. Maybe they are better written, or maybe it is the act of forking over $50 that makes you more inclined to study the material.
Either way, I agree that books should be part of this question. If anyone has any suggestions for books for languages I will edit the post with the best suggestions.
The reference you have listed for Ruby is for Ruby on Rails. While still ruby deep down, it is definitely not a place to start for people wanting to learn Ruby.
For Ruby tutorials, I would suggest Why's (Poignant) Guide to Ruby as a great starting point for anyone interested in the language.
If you would want to get into more detail, I would recommend the book Programming Ruby, which has become the standard for all things Ruby. The third edition is currently being written, highlighting Ruby 1.9 features, so I would hold off for a while if anyone is considering buying this book.
For J2EE you have a very comprehensive tutorial at:
http://java.sun.com/javaee/5/docs/tutorial/doc/
For Java, I highly recommend Core Java. It's a large tome (or two large tomes), but I've found it to be one of the best references on Java I've read.
I know this is a cross post from here... but, I think one of the best Java books is Java Concurrency in Practice by Brian Goetz. A rather advanced book - but, it will wear well on your concurrent code and Java development in general.
The defacto standard for learning Grails is the excellent Getting Started with Grails by Jason Rudolph. You can debate whether it is an online tutorial or a book since it can be purchased but is available as a free download. There are more "real" books being published and I recommend Beginning Groovy and Grails.
C#
C# to the Point by Hanspeter Mössenböck. On a mere 200 pages he explains C# in astonishing depth, focusing on underlying concepts and concise examples rather than hand waving and Visual Studio screenshots.
For additional information on specific language features, check the C# language specification ECMA-334.
Framework Design Guidelines, a book by Krzysztof Cwalina and Brad Abrams from Microsoft, provides further insight into the main design decisions behind the .NET library.

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