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DtY

Mon Oct 12, 2009 3:24 pm


Get items of an array that match a condition

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I feel stupid asking this.. I should know the answer, but I just can't remember what method I want. I looked at > 

Thanks


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DtY

Mon Oct 12, 2009 3:35 pm


RE:Get items of an array that match a condition

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Found it, it's Array#select


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Vermette

Mon Oct 12, 2009 3:36 pm


RE:Get items of an array that match a condition

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select:
http://www.ruby-doc.org/core/classes/Array.html

edit: beaten


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wtd

Wed Oct 14, 2009 10:23 pm


RE:Get items of an array that match a condition

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class FixNum
    def even?
        self % 2 == 0
    end
end

module Enumerable
    def all_evens
        select { |x| x.even? }
    end
end


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gianni

Thu Oct 15, 2009 3:33 pm


Re: RE:Get items of an array that match a condition

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class FixNum
    def even?
        self % 2 == 0
    end
end

module Enumerable
    def all_evens
        select { |x| x.even? }
    end
end

Building on wtd's example, if you're using Rails or Ruby 1.9:

class FixNum
    def even?
        self % 2 == 0
    end
end

array.select(&:even?)