strip

>>-strip-+----------------------+-------------------------------><
         +-(option-+--------+-)-+
                   +-,chars-+

Returns a copy of the receiving string with leading characters, trailing characters, or both, removed, based on the [option] you specify. The following are valid [option] s. (You need to specify only the first capitalized letter; all characters following it are ignored.)

The [chars] specifies the set of characters to be removed, and the default is to remove all whitespace characters (spaces and horizontal tabs). If [chars] , is a null string, then no characters are removed. Otherwise, any occurrences of the characters in [chars] will be removed.

String class - strip method

"  ab c  "~strip         ->    "ab c"
"  ab c  "~strip("L")    ->    "ab c  "
"  ab c  "~strip("t")    ->    "  ab c"
"12.7000"~strip(,0)      ->    "12.7"
"0012.700"~strip(,0)     ->    "12.7"
"0012.000"~strip(,".0"") ->    "12"