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rodrigopinto/array-tap-example.rb

Last active December 11, 2015 19:48
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array-tap-example.rb
original = [2, 3, 5, 10].tap do |arr|
arr.map { |v| v*v }.tap {|x| puts "squares: #{x.inspect}"} # => squares: [4, 9, 25, 100]
end
puts "original: #{original.inspect}" # => original: [2, 3, 5, 10]
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