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Is there a regular expression to detect a valid regular expression?
...?\)|\(\?(?:R|[+-]?\d+)\))(?:(?:[?+*]|\{\d+(?:,\d*)?\})[?+]?)?|\|)*)$/
.NET does not support recursion directly. (The (?1) and (?R) constructs.) The recursion would have to be converted to counting balanced groups:
^ # start of string
(?:
(?: [^?+*{}()[\...
browser sessionStorage. share between tabs?
...E8 support as well. :)
Credit goes to this full article:
http://blog.guya.net/2015/06/12/sharing-sessionstorage-between-tabs-for-secure-multi-tab-authentication/
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What is the python “with” statement designed for?
... diveintopython.org is down (permanently?). Mirrored at diveintopython.net
– snuggles
Feb 11 '15 at 14:45
Example ...
How does Google's Page Speed lossless image compression work?
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@Pumbaa80 You might also try advsys.net/ken/util/pngout.htm (which specifically says that it can sometimes get smaller sizes than both optipng and pngcrush).
– Amber
Sep 10 '12 at 7:45
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What is the difference between -viewWillAppear: and -viewDidAppear:?
...m my domain into the form" in viewWillAppear? You mean downloading through network? But you also suggest download stuff in viewDidAppear?
– Philip007
Dec 3 '12 at 9:28
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When to throw an exception?
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"missing file on disk" Most language frameworks, e.g. .NET framework, provides APIs to check for file existence as well. Why not use them before accessing the file directly!
– user1451111
Jun 15 '18 at 12:16
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Jump to function definition in vim
...t PHP. It supports PHP as well as Python. Have a look at ctags.sourceforge.net/languages.html to see the full support.
– data
Dec 1 '10 at 17:54
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How to Right-align flex item?
...s not have less css then others (will not work without OP's css - jsfiddle.net/63ma3b56). But it has one more html element.
– Zanshin13
Aug 15 '17 at 15:01
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Storing Images in DB - Yea or Nay?
...em call to asynchronously send a file directly from the file system to the network interface. Images stored in a database don't benefit from this optimization.
things like web servers, etc, need no special coding or processing to access images in the file system
databases win out where transactiona...
Forward an invocation of a variadic function in C
...Jun 21 '17 at 14:47
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answered Sep 29 '08 at 20:57
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