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MySQL: Invalid use of group function

...| edited Nov 21 '18 at 8:34 Backrub32 7711010 silver badges3131 bronze badges answered Feb 25 '10 at 0:5...
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How to limit depth for recursive file list?

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How to filter None's out of List[Option]?

... NicolasNicolas 22.9k44 gold badges5757 silver badges6363 bronze badges ...
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Ruby/Rails: converting a Date to a UNIX timestamp

... 354 The code date.to_time.to_i should work fine. The Rails console session below shows an example: ...
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How to quit scala 2.11.0 REPL?

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How to create byte array from HttpPostedFile

... Robert MacLean 37.7k2424 gold badges9595 silver badges146146 bronze badges answered Dec 11 '08 at 16:32 WolfwyrdWolfwyrd ...
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What is the difference between Int and Integer?

...y recognise the "bignum" type here. "Int" is the more common 32 or 64 bit integer. Implementations vary, although it is guaranteed to be at least 30 bits. Source: The Haskell Wikibook. Also, you may find the Numbers section of A Gentle Introduction to Haskell useful. ...
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How do I change the background color of a plot made with ggplot2

... | edited Apr 12 '14 at 16:05 PatrickT 6,92955 gold badges5454 silver badges9090 bronze badges an...
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Does running git init twice initialize a repository or reinitialize an existing repo?

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What is the difference between gsub and sub methods for Ruby Strings

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