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Why can't strings be mutable in Java and .NET?
...ance, or provide synchronization. A typical application will read a string 100 times for every time that string needs to be modified. See wikipedia on immutability.
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Cosmic Rays: what is the probability they will affect a program?
...khat.com/bh-us-11/Dinaburg/… lists modern multi-GB DRAMs to have around 10000-30000 FIT/Mbit (less than 100 hours between errors for every 128MB). The paper also lists articles which conclude that most soft errors are from radiation, almost all cases - from cosmic rays, and some cases from alpha-...
The necessity of hiding the salt for a hash
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ranbow table from say 1000 commonly used passwords would break this in almost the same speed as just hashing. The only way this would work is that if you assume the distribution of your passwords to be uniform.. and we know they are not
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Maximum concurrent Socket.IO connections
...onnections? I am having the identical issue, and my file limits are set to 100,000, so I know that is not the issue. Any help would be greatly appreciated. Thank you.
– Seth
Oct 1 '15 at 14:11
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How do I interpret precision and scale of a number in a database?
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mezoidmezoid
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What is the best way to detect a mobile device?
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100
Why not: if( screen.width <= 480 ) { // is mobile }
– andrewrjones
Jan 20 '13 at 1:05
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How to [recursively] Zip a directory in PHP?
..._limit(3000);
ini_set('max_execution_time', 3000);
ini_set('memory_limit','100M');
$new_zip_filename='down_zip_file_'.rand(1,1000000).'.zip';
// Download action
if (isset($_GET['dir'])) {
$za = new ModifiedFlxZipArchive;
//create an archive
if ($za->open($new_zip_filename, ZipAr...
Is functional GUI programming possible? [closed]
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I 100% agree with this. To make it crystal clear: the reason why existing GUI toolkits are often used is because they exist. The reason why interfaces to them tend to be imperative and impure is because the toolkits tend to be ...
What exactly are DLL files, and how do they work?
...d across multiple executables - this saves memory since, if you're running 100 apps with a single DLL, there may only be one copy of the DLL in memory.
Their main disadvantage is advantage #1 - having DLLs change independent your application may cause your application to stop working or start behav...
is_file or file_exists in PHP
...enchmark('is_readable');
function benchmark($funcName) {
$numCycles = 10000;
$time_start = microtime(true);
for ($i = 0; $i < $numCycles; $i++) {
clearstatcache();
$funcName('path/to/file.php'); // or 'path/to/file.php' instead of __FILE__
}
$time_end = microt...