Ruby Detect method

Posted by JZ on Stack Overflow See other posts from Stack Overflow or by JZ
Published on 2010-06-07T02:57:43Z Indexed on 2010/06/07 3:02 UTC
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Select makes sense. But can someone explain .detect to me? I don't understand these data.

>> [1,2,3,4,5,6,7].detect { |x| x.between?(3,4) }
=> 3
>> [1,2,3,4,5,6,7].detect { |x| x.between?(3,6) }
=> 3
>> [1,2,3,4,5,6,7].detect { |x| x.between?(3,7) }
=> 3
>> [1,2,3,4,5,6,7].detect { |x| x.between?(2,7) }
=> 2
>> [1,2,3,4,5,6,7].detect { |x| x.between?(1,7) }
=> 1
>> [1,2,3,4,5,6,7].detect { |x| x.between?(6,7) }
=> 6
>> [1,2,3,4,5,6,7].select { |x| x.between?(6,7) }
=> [6, 7]
>> [1,2,3,4,5,6,7].select { |x| x.between?(1,7) }
=> [1, 2, 3, 4, 5, 6, 7]

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