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Why doesn't Java support unsigned ints?
...th a specific example (from CLR no less). What's more confusing giving an Array a signed integer length value or an unsigned length? It's impossible for an Array to have negative length yet our API indicates that's possible.
– JaredPar
Jan 10 '09 at 2:29
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How do you create optional arguments in php?
...t $timestamp = time(), and combined it with a null check. Literals include arrays (array() or []), booleans, numbers, strings, and null.
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Generate random 5 characters string
...'); // and any other characters
shuffle($seed); // probably optional since array_is randomized; this may be redundant
$rand = '';
foreach (array_rand($seed, 5) as $k) $rand .= $seed[$k];
Example
And, for one based on the clock (fewer collisions since it's incremental):
function incrementalHash($...
How can I declare and define multiple variables in one line using C++?
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Possible approaches:
Initialize all local variables with zero.
Have an array, memset or {0} the array.
Make it global or static.
Put them in struct, and memset or have a constructor that would initialize
them to zero.
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How are Python's Built In Dictionaries Implemented?
....
Python hash table is just a contiguous block of memory (sort of like an array, so you can do an O(1) lookup by index).
Each slot in the table can store one and only one entry. This is important.
Each entry in the table is actually a combination of the three values: < hash, key, value >. T...
Obtain form input fields using jQuery?
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$('#myForm').submit(function() {
// get all the inputs into an array.
var $inputs = $('#myForm :input');
// not sure if you wanted this, but I thought I'd add it.
// get an associative array of just the values.
var values = {};
$inputs.each(function() {
value...
Selecting only first-level elements in jquery
....
jQuery.extend(jQuery.expr[':'], {
topmost: function (e, index, match, array) {
for (var i = 0; i < array.length; i++) {
if (array[i] !== false && $(e).parents().index(array[i]) >= 0) {
return false;
}
}
return true;
}
});
Utilizing this, the sol...
PHP script to loop through all of the files in a directory?
...($directory)) {
exit('Invalid diretory path');
}
$files = array();
foreach (scandir($directory) as $file) {
if ($file !== '.' && $file !== '..') {
$files[] = $file;
}
}
var_dump($files);
?>
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Is there a query language for JSON?
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The built-in array.filter() method makes most of these so-called javascript query libraries obsolete
You can put as many conditions inside the delegate as you can imagine: simple comparison, startsWith, etc. I haven't tested but you coul...
How to search a specific value in all tables (PostgreSQL)?
...ecific value.
It takes as arguments the value to search in text format, an array of table names to search into (defaults to all tables) and an array of schema names (defaults all schema names).
It returns a table structure with schema, name of table, name of column and pseudo-column ctid (non-durab...