Ruby Detect method

Question

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
>&g         


        

Answer 1

find and detect will always either return a single object or they will return nil if nothing is matched:

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

find_all and select will return an array of things that it finds that match:

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

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