This is why C is sort of unassuming in its "sizeof arr / sizeof *arr" pattern. Whenever you write a new type, just write a sizing function for it using sizeof.

This is why C is sort of unassuming in its "sizeof arr / sizeof *arr" pattern. Whenever you write a new type, just write a sizing function for it using sizeof. I like that Go is taking a similar route, except that one just implements the signature.