check if given string consists only of whitespace

---

Parameters

whitespace? string :char :string

Returns

Examples

copy
whitespace? "hello"           ; => false
whitespace? " "               ; => true
whitespace? "\n \n"           ; => true
whitespace? ""                ; => false

copy
whitespace? ' '               ; => true
whitespace? '\n'              ; => true
whitespace? 'a'               ; => false

Related