`numbers_array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] strings_array = numbers_array.map(&:to_s)`

I get it that I am converting each of the integers of the array to strings, but I got a bit confused because I thought that when I put a colon it means its a symbol, can someone explain to me why there is a ":" there please.

Thank You