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I am reading the code of vim 1.14 and I have some questions about undo.c.
I don't understand the implementation of the undo/redo operation, especially in the function u_undoredo().
I want to know why it uses the link list u_entry?
If you checkout the latest version of vim there is an explanation of vim's undo/redo implementation at the top of the undo.c file.
You can read it here.
Each u_entry list contains the information for one undo or redo.
A linked list would make sense for an undo/redo implementation to use since each entry only needs to reference the next or previous entry and can easily be added to efficiently. This is also why vim's undo history creates multiple branches of undo history. Beyond that, I'm not sure what your question is.
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Variable for whether having, for example, the variable for if the user has points, which is correct?
have_points, has_points, if_having_points or if_has_points?
Naming convention for a variable which holds boolean value should be indicated by prefixes like: is, has, have, does, will, can etc.
In your case you're using snake case. If "has Points" is being tracked for a single entity then you can go with has_points. For more than one entity you might want to go for have_points.
Although it boils to personal preference, but you should still try to keep your code short and succinct.
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I have a legacy Ruby on Rails API project, I notice that the project uses both active_model_serializer and Jbuilder. There are app/serializers diretory for active_model_serializer, and app/view/api/ for Jbuilder.
I'm new to Ruby on Rails API. From what I have read from the internet it seems active_model_serializer and Jbuilder are both used to deal with JSON data, there's even an article arguing which one is better.
I don't know which one is better, but is it a good practice to use both?
There's no problem in using both, but it's definitely not a good practice. It can be confusing for new people coming to the project. I'd say it's ok to use both if you transition from one to the other (most often from Jbuilder to AMS), but it's good to eventually stick with one of them.
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When I worked for my previous company, I used BeyondCompare to compare directories containing codes. After switching to a new company, I became to use Linux. For the same code comparison purpose, I started using tkdiff. But, the GUI of tkdiff is not as good as BeyondCompare, and it seems that tkdiff cannot compare directories with multiple files. Could anyone suggest what would be the best free source comparison tool I can use in Linux environment?
in my work , I use Meld (http://meldmerge.org/)
best Regards!
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I am creating an application where each user will have his own workspace which will consist of some text files. He will be editing and saving these files excessively.
I want to implement a version control system for each user to keep track of his work and revert back and forth to any previous version if he wants to.
I would also like users be able to fork into each others workspace to copy the content to their own workspace just like in plnkr.co, make changes and commit easily.
My stack is node.js and angular.js
Where should I start, to implement it. I guess there should some way to use git or some other open source project. Does anybody have any idea what plunker is using?
Super late response, but for anyone stumbling across this, try checking out git=annex
We used this at one of my old jobs for keeping track of fMRI datasets. It's best used for large data though, so one may want to find something similar but perhaps better aligned for what they need.
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I need a live multi rename tool.
The one you can find in double commander, or even better total commander.
The best I could find is renameutils,
which lists all the files and let me edit them in my favorite text editor,
but nothing beats something which is designed to be specifically used to rename.
Is there such a program?
Has to be live and interactive - I have to see the edits I'm doing before hitting the "OK" key.
Has to be in the command line - ncurses, slang, shell. Just not GUI.
Edit:
It's probably doesn't belong here, but super-user:)
Answers would still be welcome.
How about RenameWand? http://renamewand.sourceforge.net/
But you indeed should have tried superuser instead: https://superuser.com/questions/25378/mass-renaming-nix-version