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How can we match a^n b^n with Java regex?
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As mentioned in the question — with .NET balancing group, the patterns of the type anbncndn…zn can be matched easily as
^
(?<A>a)+
(?<B-A>b)+ (?(A)(?!))
(?<C-B>c)+ (?(B)(?!))
...
(?<Z-Y>z)+ (?(Y)(?!))
$
For example: http...
How do you remove Subversion control for a folder?
...ocation and it will remove the .svn folders and files.
http://tortoisesvn.net/docs/release/TortoiseSVN_en/tsvn-dug-export.html#tsvn-dug-export-unversion
Updated Answer for Subversion 1.7:
In Subversion 1.7 the working copy has been revised extensively. There is only one .svn folder, located in the...
How to solve PHP error 'Notice: Array to string conversion in…'
...orrection 1: use the builtin php function print_r or var_dump:
http://php.net/manual/en/function.print-r.php or http://php.net/manual/en/function.var-dump.php
$stuff = array(1,2,3);
print_r($stuff);
$stuff = array(3,4,5);
var_dump($stuff);
Prints:
Array
(
[0] => 1
[1] => 2
[2]...
Resize image proportionally with CSS? [duplicate]
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Here's a jsfiddle for you: jsfiddle.net/oy6t2xgL
– Mārtiņš Briedis
Sep 30 '14 at 12:52
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show 2 mo...
Regex empty string or email
...ng or email
(^$|^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.(?:[a-zA-Z]{2}|com|org|net|edu|gov|mil|biz|info|mobi|name|aero|asia|jobs|museum)$)
matching empty string or email but also matching any amount of whitespace
(^\s*$|^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.(?:[a-zA-Z]{2}|com|org|net|edu|gov|mil|biz|inf...
Using braces with dynamic variable names in PHP
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from phpNET manual php.net/manual/ru/language.variables.variable.php $price_for_monday = 10; $price_for_tuesday = 20; $today = 'tuesday'; $price_for_today = ${ 'price_for_' . $today}; echo $price_for_today; // will return 20
...
Will Try / Finally (without the Catch) bubble the exception?
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In vb.net, it's possible for code in a Finally block to know what exception is pending. If one sets up an exception hierarchy to distinguish "didn't do it; state otherwise okay" from "state is broken", one could have a Finally blo...
Using jQuery to replace one tag with another
... children() won't work. Using contents() instead works perfectly. jsfiddle.net/7Yne9
– Jens Roland
Aug 17 '11 at 13:31
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How to insert a line break before an element using CSS
...e:
$('<br />').insertBefore('#restart');
Example: http://jsfiddle.net/jasongennaro/sJGH9/1/
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Convert an image (selected by path) to base64 string
...l file's bytes, you have the bytes of the image as re-saved to gif by the .Net framework.
– Nyerguds
Jul 23 '19 at 15:03
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