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Can someone explain this 'double negative' trick? [duplicate]
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I know that this is a bit of a stale thread, but I think its important to point out that bang-bang(!!) is far more performant than Boolean(val). jsperf.com/bang-bang-vs-boolean
– Mad Man Moon
Oct 25 '13 at 14...
Why was the switch statement designed to need a break?
...n".
– Michael Burr
Oct 31 '08 at 18:10
If you're using explicit jumps via GOTO, isn't it just as productive to just us...
Does a foreign key automatically create an index?
... its criteria.
So it seems pretty clear (although the documentation is a bit muddled) that it does not in fact create an index.
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API vs. Webservice [closed]
...gh a web service is involved. Otherwise, we can make a case that for every bit of function ever created, be it in a DLL, or JAR, web service, or plain code to be all APIs. For an API to be API it has to have 3rd party developers in mind and the API should have no dependency whatsoever with the fina...
Maintain/Save/Restore scroll position when returning to a ListView
...s a pseudo problem.The first visible position might be shown only a little bit, (maybe just a small part of the row) , and setSelection() set this row to be completely visible when the restore is made.
– rantravee
Jun 10 '10 at 15:06
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ActiveRecord.find(array_of_ids), preserving order
....sort_by{|thing| array_of_ids.index thing.id}
Or if you need something a bit faster (but arguably somewhat less readable) you could do this:
Something.find(array_of_ids).index_by(&:id).values_at(*array_of_ids)
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How do I upgrade PHP in Mac OS X?
... http://php-osx.liip.ch/ and other tutorials until I finally noticed a tid-bit of information written in a comment in one of the many different .conf files OS X Server keeps which was that OS X Server loads it's own custom .conf file before it loads the Apache httpd.conf (located at /etc/apache2/htt...
Parsing XML with namespace in Python via 'ElementTree'
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– Martijn Pieters♦
Aug 20 '14 at 7:10
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Small addition that may be useful: when using cElementTr...
What is the difference between Python and IPython?
... Good point, @Roadowl I guess saying "interactive shell" is a bit redundant isn't it.
– MikeiLL
Jun 28 '15 at 3:59
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MVC 5 Seed Users and Roles
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This bit is completely incorrect from a conceptual point of view: Task.Run(async () => { await SeedAsync(context); }).Wait();. You should rather write SeedAsync(context).GetAwait().GetResult(); which is marginally better.
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