methodarity.rb - Backport187 - Ruby Issue Tracking System

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Backport #3938 » methodarity.rb

ruby script to minimally reproduce the incorrect behavior - Ethan (Ethan -), 10/13/2010 03:19 AM

    
    def Object.onearg(arg)

      arg

    end

    amethod = Object.method(:onearg)

    aproc = proc{|arg| arg}

    require 'pp'

    pp([[1, 2]].detect(&aproc))   # works because proc works correctly

    pp([[1]].detect(&amethod))    # works because arity happens to be the same as [1].size

    pp([[1, 2]].detect(&amethod)) # doesn't work because arity isn't the asme as [1, 2].size

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