i think this function is used to clear head & tail whitespace, and retain whitespace between other chars.
but the phiscal truth is
when the first char is whitespace :: all whitespace in string will be cleard.
when the first char is not whitespace :: the tail whitespace is retained.
i think this function is used to clear head & tail whitespace, and retain whitespace between other chars.
but the phiscal truth is when the first char is whitespace :: all whitespace in string will be cleard. when the first char is not whitespace :: the tail whitespace is retained.