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rails 3 validation on uniqueness on multiple attributes
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answered Aug 13 '12 at 9:22
RayRay
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Does the JVM prevent tail call optimizations?
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– Gautham Ganapathy
Dec 21 '09 at 9:22
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@Gautham: My statement about debugging was in reference ...
How to make Git “forget” about a file that was tracked but is now in .gitignore?
... git pull though.
– Petr Peller
May 22 '14 at 16:04
23
git rm --cached <file> just remove f...
How do I pass an object from one activity to another on Android? [duplicate]
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anargundanargund
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How to vertically center a inside a div? [duplicate]
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answered Jun 22 '12 at 18:19
Paul SweattePaul Sweatte
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How do I declare a namespace in JavaScript?
... edited Sep 30 '10 at 19:25
user229044♦
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answered May 19 '09 at 8:22
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Why does [5,6,8,7][1,2] = 8 in JavaScript?
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bluish
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answered Sep 14 '11 at 18:16
Mike SamuelM...
How do I remove all .pyc files from a project?
..., .pyc,...
– cdosborn
Aug 20 '16 at 22:25
2
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Using the star sign in grep
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122
The asterisk is just a repetition operator, but you need to tell it what you repeat. /*abc*/ ma...
Close virtual keyboard on button press
...o have to import Context.
– Si8
Jul 22 '13 at 18:19
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CAUTION: Throws NPE if keyboard is already ...