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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?

... Dan WichDan Wich 4,74311 gold badge2222 silver badges2222 bronze badges ...
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Why does IE9 switch to compatibility mode on my website?

... Kermit 32.1k1010 gold badges7474 silver badges110110 bronze badges answered Sep 16 '10 at 12:25 bobincebobince 484k9999 gold...
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Using Java with Nvidia GPUs (CUDA)

...o papers or even code – Marco13 Apr 11 '14 at 22:42 +1 for aparapi - its a simple way to get started with opencl in ja...
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How do I URL encode a string

... Community♦ 111 silver badge answered Nov 11 '11 at 1:03 chownchown 47.6k1616 gold badges1...
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Returning IEnumerable vs. IQueryable

...able to IQueryable ? – fjxx Feb 23 '11 at 16:31 8 So we can say that if we're using IQueryable to...
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Convert char to int in C and C++

... lucidbrot 3,11022 gold badges2424 silver badges4848 bronze badges answered Feb 17 '11 at 14:16 Foo BahFoo Bah ...
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Handle ModelState Validation in ASP.NET Web API

... 11 There is also a similar implementation at the official ASP.NET Web Api page: asp.net/web-api/overview/formats-and-model-binding/… ...
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pandas read_csv and filter columns with usecols

... 114 The answer by @chip completely misses the point of two keyword arguments. names is only nece...
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What's the difference between VARCHAR and CHAR?

...| edited Mar 24 '18 at 17:11 MrGeek 17.4k44 gold badges2222 silver badges4444 bronze badges answered Dec...
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socket.error: [Errno 48] Address already in use

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