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@@ -121,4 +121,9 @@ When will not work if your code contains any of these.
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 In our experience we've never used any of these types of callbacks and filters.  By using Symbols, i.e. methods,
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 the resulting code is much more intention revealing.  Class callbacks and filters we feel are most of the time overkill.
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+Installation
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+============
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+
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+piston import https://svn.thoughtbot.com/plugins/when/trunk vendor/plugins/when
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+
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 Copyright (c) 2008 Jared Carroll and Dan Croak, released under the MIT license