# Define an array of arrays arrays = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] # Flatten the arrays and return a new array flat_array = arrays.flat_map { |a| a } # => [1, 2, 3, 4, 5, 6, 7, 8, 9]
# Define an array of arrays arrays = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] # Flatten the arrays and return a new array flat_array = arrays.flat_map { |a| a } # => [1, 2, 3, 4, 5, 6, 7, 8, 9]