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def square_of_sum(arr, my_proc) sum = arr.reduce(0, &my_proc)
sum ** 2
end
sum_proc = proc { |a, b| a + b } input_array = [1, 2, 3]
result = square_of_sum(input_array, sum_proc)
When run with the input array [1, 2, 3], the output will be 36.
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def square_of_sum(arr, my_proc) sum = arr.reduce(0, &my_proc) sum ** 2 end sum_proc = proc { |a, b| a + b } input_array = [1, 2, 3] result = square_of_sum(input_array, sum_proc) When run with the input array [1, 2, 3], the output will be 36. more info here if you want more info
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