The words in brackets are doing all of the heavy lifting in your example though: "Of" without "out of" means "constituted by". If in isolation I saw "array_of_s

The words in brackets are doing all of the heavy lifting in your example though: "Of" without "out of" means "constituted by". If in isolation I saw "array_of_string" I'd definitely parse that as somehow being about str[], not "f(str) -> char[]"