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Why is volatile not considered useful in multithreaded C or C++ programming?
...de, volatile can only serve to slow things
down.
Consider a typical block of kernel code:
spin_lock(&the_lock);
do_something_on(&shared_data);
do_something_else_with(&shared_data);
spin_unlock(&the_lock);
If all the code follows the locking rules, the value of shared_da...
Uniq by object attribute in Ruby
...
Use Array#uniq with a block:
@photos = @photos.uniq { |p| p.album_id }
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Making custom right-click context menus for my web-app
...f; box-shadow: 1px 1px 2px #cfcfcf; }
.context-menu--active { display: block; }
.context-menu__items { list-style: none; margin: 0; padding: 0; }
.context-menu__item { display: block; margin-bottom: 4px; }
.context-menu__item:last-child { margin-bottom: 0; }
.context-menu__link { ...
Using link_to with embedded HTML
...
Maybe it should be <%= link_to ... in the example with block?
– Voldy
Feb 22 '12 at 19:59
It defin...
Syntax highlighting code with Javascript [closed]
What Javascript libraries can you recommend for syntax highlighting blocks in HTML?
13 Answers
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How to do something before on submit? [closed]
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Assuming you have a form like this:
<form id="myForm" action="foo.php" method="post">
<input type="text" value="" />
<input type="submit" value="submit form" />
</form>
You can attach a onsubmit-event with jQuery like this:
$('#myForm').submit(function() {
a...
Should a function have only one return statement?
... I definately think it's better than putting your entire function in an IF block. Use return as often as it makes sense to keep your code readable.
– Joshua Carmody
Sep 19 '08 at 20:20
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VS2005混合编译ARM汇编代码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...TLE("Sample App")
;++
AREA sample, CODE, READONLY ; name this block of code
EXPORT TEST
IMPORT iGlobal
;
; Called from C as int ARMTEST1(int, int, int, int);
; The first 4 parameters are passed in r0-r3, more parameters would be passed on the stack
;
TEST proc
...
Is there a MySQL option/feature to track history of changes to records?
...ess some comments in no particular order:
I did my own implementation in PHP that was a little more involved, and avoided some of the problems described in comments (having indexes transferred over, signifcantly. If you transfer over unique indexes to the history table, things will break. There ar...
How to make a div with no content have a width?
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use "display:inline-block"
– Luccas
May 17 '12 at 5:14
good sol...