Serious Orange » Ruby http://seriousorange.com Fri, 08 Jan 2010 02:40:04 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 the underscore variable in Ruby http://seriousorange.com/2009/10/the-underscore-variable-in-ruby/ http://seriousorange.com/2009/10/the-underscore-variable-in-ruby/#comments Thu, 08 Oct 2009 11:59:23 +0000 Roger http://seriousorange.com/?p=13 > _ => nil >> 123 => 123 >> _ => 123 >> _, _, a = [1,2,3] => [1, 2, 3] [...]]]> Seems like the underscore variable returns the result of the previous statement, and you can use it in assignment like you do with Erlang to eat up list members you don’t care about.

>> _
=> nil

>> 123
=> 123

>> _
=> 123

>> _, _, a = [1,2,3]
=> [1, 2, 3]

>> a
=> 3

>> _
=> 3

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