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What is the fastest integer division supporting division by zero no matter what the result is?
...such a popular question and answer, I'll elaborate a bit more. The above example is based on programming idiom that a compiler recognizes. In the above case a boolean expression is used in integral arithmetic and the use of condition flags are invented in hardware for this purpose. In general condit...
HTML input - name vs. id [duplicate]
... & checkboxes
Can not be referenced in URL, although as JavaScript and PHP can see the URL there are workarounds
Is referenced in JS with getElementsByName()
Shares the same namespace as the id attribute
Must begin with a letter
According to specs is case sensitive, but most modern browsers don'...
PHP mkdir: Permission denied problem
I am trying to create a directory with PHP mkdir function but I get an error as follows: Warning: mkdir() [function.mkdir]: Permission denied in ... . How to settle down the problem?
...
Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...ked));
struct foo arr[2] = { { 'a', 10 }, {'b', 20 } };
int *p0 = &arr[0].x;
int *p1 = &arr[1].x;
printf("sizeof(struct foo) = %d\n", (int)sizeof(struct foo));
printf("offsetof(struct foo, c) = %d\n", (int)offsetof(struct foo, c));
printf("offsetof(struct foo, x)...
Characters allowed in a URL
...789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_~
Note: Before PHP 5.3.0 rawurlencode() encoded ~ because of RFC 1738. But this was replaced by RFC 3986 so its safe to use, now. But I do not understand why for example {} are encoded through rawurlencode() because they are not mentioned i...
How can I create a link to a local file on a locally-run web page?
... (e.g. local dev server) to a local file. forums.mozillazine.org/viewtopic.php?f=9&t=1730
– nuala
Feb 20 '16 at 23:30
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show 1 more comm...
$(document).ready equivalent without jQuery
...e if the document is ready
if ( document.documentElement.doScroll && window == window.top ) (function(){
if ( jQuery.isReady ) return;
try {
// If IE is used, use the trick by Diego Perini
// http://javascript.nwbox.com/IEConte...
Best practice: PHP Magic Methods __set and __get [duplicate]
...management by the IDE for refactoring and code-browsing (under Zend Studio/PhpStorm this can be handled with the @property phpdoc annotation but that requires to maintain them: quite a pain)
the documentation (phpdoc) doesn't match how your code is supposed to be used, and looking at your class does...
Email validation using jQuery
...how();
return false;
}
//ajax call php page
$.post("send.php", $("#contactform").serialize(), function(response) {
$('#contactform').fadeOut('slow',function(){
$('#success').html(response);
$('#success')...
Where are $_SESSION variables stored?
...
The location of the $_SESSION variable storage is determined by PHP's session.save_path configuration. Usually this is /tmp on a Linux/Unix system. Use the phpinfo() function to view your particular settings if not 100% sure by creating a file with this content in the DocumentRoot of your...