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When should I use a List vs a LinkedList
...is is .net specific): since the List is backed by an internal array, it is allocated in one contiguous block. If that allocated block exceeds 85000 bytes in size, it will be allocated on the Large Object Heap, a non-compactable generation. Depending on the size, this can lead to heap fragmentation, ...
PHP's array_map including keys
...
Here's my very simple, PHP 5.5-compatible solution:
function array_map_assoc(callable $f, array $a) {
return array_column(array_map($f, array_keys($a), $a), 1, 0);
}
The callable you supply should itself return an array with two values, i.e. r...
How to save an HTML5 Canvas as an image on a server?
... server via Ajax
$.ajax({
type: "POST",
url: "script.php",
data: {
imgBase64: dataURL
}
}).done(function(o) {
console.log('saved');
// If you want the file to be visible in the browser
// - please modify the callback in javascript. ...
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?
...
How can I connect to a Tor hidden service using cURL in PHP?
I'm trying to connect to a Tor hidden service using the following PHP code:
4 Answers
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Android Fragments: When to use hide/show or add/remove/replace?
...y solution but some time randomly when i show my dialog it give window bad token exception when i used add and replace method then bad token exception is not occur so i think show/hide method is not perfect
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How to resize a VirtualBox vmdk file
...
vmdk's :
Rather fixed size allocation (step 1,2).
Even after expansion, not readily available inside the vmdk's OS (step 3,4,5)
STEPS:
1) convert to ".vdi" first - VBoxManage clonehd v1.vmdk v1.vdi --format vdi
2) expand the size using command-line (R...
Why is ArrayDeque better than LinkedList
...ou exclude the iteration costs for real time application and ability to prealloc the needed capacity, the GC may need to iterate the entire LinkedList. Basically you are moving the costs (which are higher to boot) into the GC.
– bestsss
May 19 '14 at 5:26
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In PHP, can you instantiate an object and call a method on the same line?
...
The feature you have asked for is available from PHP 5.4. Here is the list of new features in PHP 5.4:
http://php.net/manual/en/migration54.new-features.php
And the relevant part from the new features list:
Class member access on instantiation has been added, e.g. (ne...
PHP - iterate on string characters
...ated array
foreach ($array as $char) {
echo $char;
}
You can check the PHP docs for more information: str_split
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