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Resize image in PHP
...
You need to use either PHP's ImageMagick or GD functions to work with images.
With GD, for example, it's as simple as...
function resize_image($file, $w, $h, $crop=FALSE) {
list($width, $height) = getimagesize($file);
$r = $width / $height;
if ($crop) {
i...
How to create the most compact mapping n → isprime(n) up to a limit N?
...):
if n % i == 0:
return False
return True
And I mixed a few ideas from the other answers into a new one:
def is_prime_4(n):
if n <= 1: # negative numbers, 0 or 1
return False
if n <= 3: # 2 and 3
return True
if n % 2 == ...
Alternatives to gprof [closed]
...
Valgrind has an instruction-count profiler with a very nice visualizer called KCacheGrind. As Mike Dunlavey recommends, Valgrind counts the fraction of instructions for which a procedure is live on the stack, although I'm sorry to say it appears to...
Auto-size dynamic text to fill fixed size container
...Thanks Attack. I wanted to use jQuery.
You pointed me in the right direction, and this is what I ended up with:
Here is a link to the plugin: https://plugins.jquery.com/textfill/
And a link to the source: http://jquery-textfill.github.io/
;(function($) {
$.fn.textfill = function(options) {
...
Difference between array_map, array_walk and array_filter
...mentation,
bool array_walk ( array &$array , callback $funcname [, mixed $userdata ] ) <-return bool
array_walk takes an array and a function F and modifies it by replacing every element x with F(x).
array array_map ( callback $callback ,
array $arr1 [, array $... ] )<-return...
C++ auto keyword. Why is it magic?
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Notes
Until C++11, auto had the semantic of a storage duration specifier.
Mixing auto variables and functions in one declaration, as in auto f() -> int, i = 0; is not allowed.
For more info : http://en.cppreference.com/w/cpp/language/auto
...
To underscore or to not to underscore, that is the question
... you the private fields and all types available from the linked assemblies mixed with the rest of the instance members
this-notation gives you a clear answer, by typing "this" all you see is the list of members and nothing else
Ambiguity
Sometimes you have to deal with the code without help of th...
Compression/Decompression string with C#
I am newbie in .net. I am doing compression and decompression string in C#. There is a XML and I am converting in string and after that I am doing compression and decompression.There is no compilation error in my code except when I decompression my code and return my string, its returning only half ...
Reading/writing an INI file
...ere is no built-in mechanism for reading them.
There are third party solutions available, though.
INI handlers can be obtained as NuGet packages, such as INI Parser.
You can write your own INI handler, which is the old-school, laborious way. It gives you more control over the implementation, whic...
best practice to generate random token for forgot password
...id() only adds up to 29 bits of entropy
md5() doesn't add entropy, it just mixes it deterministically
Since a 56-bit DES key can be brute-forced in about 24 hours, and an average case would have about 59 bits of entropy, we can calculate 2^59 / 2^56 = about 8 days. Depending on how this token veri...