module Enumerable

Returns the object in enum that gives the maximum value from the given block.

@yield [obj] The block to call on each element in the enum @yieldparam [Object] obj A single object in the enum @yieldreturn [Comparable] A value that can be compared (+<=>+) with the

values of the other objects in the enum

# File lib/core_ext/enumerable.rb, line 21
def max_by(&block)
  max { |a , b| block.call(a) <=> block.call(b) }
end