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Where to learn about VS debugger 'magic names'
...emporaries
5 --> the result of get enumerator in a foreach
6 --> the array storage in a foreach
7 --> the array index storage in a foreach.
Temporary kinds between 8 and 264 are additional array index storages for multidimensional arrays.
Temporary kinds above 264 are used for tempora...
Anonymous recursive PHP functions
...rn function() use ( $func )
{
$args = func_get_args();
array_unshift( $args, fix($func) );
return call_user_func_array( $func, $args );
};
}
$factorial = function( $func, $n ) {
if ( $n == 1 ) return 1;
return $func( $n - 1 ) * $n;
};
$factorial = fix( $facto...
jQuery AJAX file upload PHP
...xtension = image_name.split('.').pop().toLowerCase();
if(jQuery.inArray(image_extension,['gif','jpg','jpeg','']) == -1){
alert("Invalid image file");
}
var form_data = new FormData();
form_data.append("file",property);
$.ajax({
url:'uploa...
Why are mutable structs “evil”?
...he mutable object into a read-only wrapper, which is ugly and cumbersome.
Arrays of structures offer wonderful semantics. Given RectArray[500] of type Rectangle, it's clear and obvious how to e.g. copy element 123 to element 456 and then some time later set the width of element 123 to 555, without...
Why can't I overload constructors in PHP?
...roperties you want to set. In a lot of ways it's similar to passing in an array of options to your initial call:
$car = new Car(['make' => 'Ford', 'seats' => 5]);
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Creating default object from empty value in PHP?
...
Simply,
$res = (object)array("success"=>false); // $res->success = bool(false);
Or you could instantiate classes with:
$res = (object)array(); // object(stdClass) -> recommended
$res = (object)[]; // object(stdClass) ->...
How to go to each directory and execute a command?
...upport directories with spaces in their name.
Or by assigning into bash array:
dirs=($(find . -type d))
for dir in "${dirs[@]}"; do
cd "$dir"
echo $PWD
done
Change . to your specific folder name. If you don't need to run recursively, you can use: dirs=(*) instead. The above example doesn't...
MongoDB: Combine data from multiple collections into one..how?
...e is now one document for each user with all of that user's comments in an array. If we were merging data that has a one-to-one relationship rather than one-to-many, it would be flat and you could simply use a reduce function like this:
reduce = function(k, values) {
var result = {};
value...
Split an NSString to access one particular piece
...
NSArray* foo = [@"10/04/2011" componentsSeparatedByString: @"/"];
NSString* firstBit = [foo objectAtIndex: 0];
Update 7/3/2018:
Now that the question has acquired a Swift tag, I should add the Swift way of doing this. It's ...
How can I measure the speed of code written in PHP? [closed]
...ething like this, so, if you want to know how long it take to serialize an array :
$before = microtime(true);
for ($i=0 ; $i<100000 ; $i++) {
serialize($list);
}
$after = microtime(true);
echo ($after-$before)/$i . " sec/serialize\n";
Not perfect, but useful, and it doesn't take much tim...