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Can regular expressions be used to match nested patterns? [duplicate]
...ursive "regular expressions". E.g. see the chapter "Recursive patterns" in php.net/manual/en/regexp.reference.php
– daremon
Sep 25 '08 at 15:26
2
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MySQL offset infinite rows
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use php 'PHP_INT_MAX' to avoid overflow effects.
– Karl Adler
Apr 7 '14 at 15:11
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Precedence and bitmask operations
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Seems to me that PHP has strnage operator precedence overall.
– Alvin Wong
Feb 24 '14 at 10:11
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Difference between \w and \b regular expression meta characters
...javascriptkit.com/javatutors/redev2.shtml
http://www.virtuosimedia.com/dev/php/37-tested-php-perl-and-javascript-regular-expressions
http://www.i-programmer.info/programming/javascript/4862-master-javascript-regular-expressions.html
I found this to be a very useful book:
Mastering Regular Expres...
How to post pictures to instagram using API
I am building a php application which needs to post the user uploaded picture directly to Instagram, but after a quick search i found that there is no such function in the API :( and it feels weird... because they should provide one. I am not sure if there is any other way (except the apps for andro...
What is the best regular expression to check if a string is a valid URL?
...EFFFD}!\$&'\(\)\*\+,;=:@])|[\/\?])*)?)$/i
How they were compiled (in PHP):
<?php
/* Regex convenience functions (character class, non-capturing group) */
function cc($str, $suffix = '', $negate = false) {
return '[' . ($negate ? '^' : '') . $str . ']' . $suffix;
}
function ncg($str, $...
Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
...ds to change the size of a. In particular, it never needs to do any memory allocation. Regardless of the value of i, this is a lightweight operation. If you imagine that under the hood a is a pointer, it can be a constant pointer.
The second line may be much more complicated. Depending on the value...
MySQL: Fastest way to count number of rows
...ach time you try to count all rows. (based on primary key's column)
Using PHP to count rows is not very smart, because you have to send data from mysql to php. Why do it when you can achieve the same on the mysql side?
If the COUNT(*) is slow, you should run EXPLAIN on the query, and check if inde...
How to perform Callbacks in Objective-C
...ts delegate, then there would be a retain cycle. It's a good idea in the dealloc method of a class that that has a MyClass instance and is its delegate to clear that delegate reference since it's a weak back pointer. Otherwise if something is keeping the MyClass instance alive, you'll have a danglin...
Get first n characters of a string
How can I get the first n characters of a string in PHP? What's the fastest way to trim a string to a specific number of characters, and append '...' if needed?
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