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Closed 9 years ago.
What are explicit heap dynamic variables and how does the binding property in them implemented? (not for a particular language I want to know about the overall functionality of these variables). I came to know that they are bound during run time what is the meaning of this?
Explicit heap-dynamic variables are nameless memory cells that are
allocated and deallocated by explicit run-time instructions written by the programmer.
These variables, which are allocated from and deallocated to the heap,
can only be referenced through pointer or reference variables.
Related
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Closed 9 years ago.
Does any one have idea about how to use sysinfo to get info like swap memory , memory used , available memory , load average , total physical memory , total cache memory.
I am new to perl.
thanks in advance.
sysinfo
use Linux::SysInfo qw/sysinfo/;
my $si = sysinfo;
print "$_: $si->{$_}\n" for keys %$si;
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Closed 10 years ago.
I am trying to bind (in XAML) to a List in C++/CX and I can't seem to have any Lists. Where'd they all go? Any kind of list will do... Even a Dictionary, or Stack, or ... something! Or has C++ changed that much since I last used it?
There are C++/CX implementations of the Windows collection interfaces in the Platform::Collections namespace, defined in <collection.h>.
See also the article on Collections in C++/CX on MSDN.
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Closed 11 years ago.
In some kind of applications that I used to "change" something in the executable files requires a proper addresses with the 0x in the beginning. For example: 0x2FF0C4.
The question is, what are those addresse and how can I get them?
I've searched a lot before creating this question, but the address phrase in the search engines provides large amount of records, because I don't know the way, how can I 'name' it.
I guess it's some kind of memory address ?
Can't beat Rouhani's simple answer but here's a little more information on memory addresses:
"Addresses" on computers are usually assumed to be "memory addresses" that identify locations on RAM. By convention, locations on RAM are denoted by hexadecimal because they are commonly encountered in powers of two i.e. pages; thus, it's arithmetic is easier with hexadecimal.
Edit: I realized that you answered your own question.
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Closed 11 years ago.
I came across one question like this
a="hello", b="bye", c=a*b
then what will the anwser of print c?
That depends on the implementation of the * operator on string data types. And that usually depends on the programming language you use. In most statically typed languages I know, this operator is not defined on strings.
In JavaScript, the value of c will be NaN.
It's a trick question, I think. You can't multiply a string with another string. I don't think any language allows this.
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Closed 11 years ago.
How are treated constants in various languages/compilers? They take up space in RAM in runtime or are replaced with their values at compile time?
A compiler is free to go either way. The typical way to handle this is to use scalars directly while keeping larger objects like arrays in memory.
In addition, if you build an embedded system, they typically go into read-only memory like flash rather than RAM.