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What does @@variable mean in Ruby?
...pect}" # nil
puts "Hexagon.sides: #{Hexagon.sides.inspect}" # 6
I included the Square example (which outputs nil) to demonstrate that this may not behave 100% as you expect; the article I linked above has plenty of additional information on the subject.
Also keep in mind that, as with most...
How to convert std::string to LPCWSTR in C++ (Unicode)
...e byte, i.e. ASCII or ISO-8859-1. Anything multi-byte will fail miserably, including UTF-8.
– Mark Ransom
Sep 3 '13 at 16:20
...
How can I search sub-folders using glob.glob module?
...s = path.glob('*/*.txt')
txt_files_all_recursively = path.rglob('*.txt') # including the current dir
Both methods return iterators (you can get paths one by one).
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...
Generating random numbers in Objective-C
...It uses a superior algorithm to rand. You don't even need to set a seed.
#include <stdlib.h>
// ...
// ...
int r = arc4random_uniform(74);
The arc4random man page:
NAME
arc4random, arc4random_stir, arc4random_addrandom -- arc4 random number generator
LIBRARY
Standard C Library ...
Why is “a” != “a” in C?
...("Yes, equal");
}
Use the following code to compare two string values:
#include <string.h>
...
if(strcmp("a", "a") == 0)
{
// Equal
}
Additionally, "a" == "a" may indeed return true, depending on your compiler, which may combine equal strings at compile time into one to save space.
...
Split long commands in multiple lines through Windows batch file
...ly removed. So, if there should be a space where you're breaking the line, include a space. (More on that below.)
Example:
copy file1.txt file2.txt
would be written as:
copy file1.txt^
file2.txt
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Format numbers in django templates
... I have added 'django.contrib.humanize' in INSTALLED_APPS and also included {% load humanize %} in my template as well and restarted the server. However , when I try to use "intcomma" filter, I get this error - Invalid filter: 'intcomma' The debug trace shows 'django.contrib.humanize' ...
Mercurial error: abort no username supplied
...rote this in 2010, we've managed to screw this up by making hg help config include help for all config settings. So the nice little example of how to set the username:
[ui]
username = Your Name <your@email.com>
is now lost in the noise (add this to ~/.hgrc, creating the file if necessary). ...
Emacs mode for Stack Overflow's markdown
...ension for Org-mode to handle Stack Overflow formatting? Ideally it should include all formatting options supported by the markdown syntax used in the Stack Overflow question/comment buffers.
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What is the difference between exit() and abort()?
... This seems to work (broken into multiple posts due to 300 char limit): #include <stdio.h> #include <stdlib.h> #include <signal.h> #include <setjmp.h> volatile sig_atomic_t do_abort = 1; jmp_buf env; void abort_handler(int i) { do_abort = 0; longjmp(env, 1);}
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