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How to implement a unique index on two columns in rails

... Dorian 17.4k66 gold badges101101 silver badges102102 bronze badges answered Nov 8 '10 at 12:45 shingarashingara ...
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how to create a file name with the current date & time in python?

...rt time timestr = time.strftime("%Y%m%d-%H%M%S") print timestr yields: 20120515-155045 so your filename could append or use this string. share | improve this answer | fo...
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Round a Floating Point Number Down to the Nearest Integer?

... int(0.6) = 0 rather than 1 – Helin Wang Nov 8 '13 at 0:05 ...
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NSUserDefaults removeObjectForKey vs. setObject:nil

... Swift 3.0 The below answer is no longer the case when I tested this. When set to nil the result is NSCFData being stored. Possibly an NSNull object reference, but I am not positive. To completely remove a value for a key use UserD...
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Disable all gcc warnings

... | edited Sep 21 '09 at 3:18 answered Sep 21 '09 at 2:49 ...
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Best way to store date/time in mongodb

... 201 The best way is to store native JavaScript Date objects, which map onto BSON native Date object...
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Differences between Line and Branch coverage

...ngth(); } If you call this method with isCoolUser set to true, you get 100% statement coverage. Sounds good? NOPE, there's going to be a null pointer if you call with false. However, you have 50% branch coverage in the first case, so you can see there is something missing in your testing (and oft...
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Postgres manually alter sequence

... | edited Oct 23 '18 at 20:43 Is Ma 57666 silver badges1010 bronze badges answered Jan 5 '12 at 15:31 ...
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Foreign key from one app into another in Django

... answered Nov 27 '08 at 14:27 Michael WarkentinMichael Warkentin 2,09311 gold badge1313 silver badges1010 bronze badges ...
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Recursive directory listing in DOS

... answered Mar 4 '10 at 4:06 Michael ToddMichael Todd 15.5k44 gold badges4646 silver badges6969 bronze badges ...