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ukazap/my_map.rb

Created January 11, 2019 01:50
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my_map.rb
class Array
def my_map
self.reduce([]) do |new_array, element|
new_array.push(yield(element))
end
end
end
[1, 2, 3].my_map { |x| x * 2 }
#=> [2, 4, 6]
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