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rails 3 validation on uniqueness on multiple attributes
I use Rails 3.0.0.beta4
3 Answers
3
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What does git push -u mean?
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answered Apr 6 '11 at 4:06
Rafe KettlerRafe Kettler
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How do you move a commit to the staging area in git?
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Neuron
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answered Aug 27 '11 at 10:52
AbizernAbizern
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How to convert a clojure keyword into a string?
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answered Sep 15 '10 at 15:49
kotarakkotarak
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How to fully remove Xcode 4
I want to remove all existing SDK versions as well as Xcode 4.
7 Answers
7
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What are the Web.Debug.config and Web.Release.Config files for?
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4 Answers
4
Active
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What do @, - and + do as prefixes to recipe lines in Make?
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246
They control the behaviour of make for the tagged command lines:
@ suppresses the normal 'ech...
Appending to an existing string
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answered Mar 1 '10 at 15:44
sepp2ksepp2k
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