ruby - Split string into equal slices/chunks -

i have string of length n , want split equal parts of length l (assuming last part might shorter).

what came is:

string.split('').each_slice(l).map(&:join) 

but toooooo long (and ugly, honest.) unable read documentation properly, or there no built-in method perform task?

what this?

string.scan(/.{,#{l}}/)