Octave has strings and they are checked at runtime: octave> strtrim(" hello world ") ans = hello world octave> strtrim([1,2,3,4]) error: strt

Octave has strings and they are checked at runtime: octave> strtrim(" hello world ") ans = hello world octave> strtrim([1,2,3,4]) error: strtrim: S argument must be a string or cellstring error: called from strtrim at line 79 column 5