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MaxPleaner/recursive_flatten.rb

Last active September 6, 2016 01:08
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recursive Array#flatten
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recursive_flatten.rb
class MyArray < Array
def flatten
reduce [] do |memo, item|
memo.concat item.is_a?(Array) ? MyArray.new(item).flatten : [item]
end
end
end
test_arr = MyArray.new [ 1, [ 1 ], [ 1, [ 1 ] ] ]
print test_arr.flatten
# => [1,1,1,1]
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