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rskelley9/my_map.rb

Created September 2, 2013 08:26
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My Map method.
Raw
my_map.rb
class Array
def my_map(&block)
self.each_index do |i|
yield (self[i] = block.call(self[i]))
end
end
end
a = [1,2,3,4]
puts a.my_map{|i| i -= 1} == a
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