Trim

Removes surrounding substrings or characters on the left and right side of 
a string

Syntax
   Declare Function Trim ( ByRef str As Const String, [ Any ] ByRef trimset 
   As Const String = " " ) As String
   Declare Function Trim ( ByRef str As Const WString, [ Any ] ByRef 
   trimset As Const WString = WStr(" ") ) As WString

Usage
   result = Trim[$]( str [, [ Any ] trimset ] )

Parameters
   str
      The source string.
   trimset
      The substring to trim.

Return Value
   Returns the trimmed string.

Description
   This procedure trims surrounding characters from the left (beginning) 
   and right (end) of a source string. Substrings matching trimset will be 
   trimmed if specified, otherwise spaces (ASCII code 32) are trimmed.

   If the Any keyword is used, any character matching a character in 
   trimset will be trimmed.

   All comparisons are case-sensitive.

Example
   Dim s1 As String = " ... Stuck in the middle ... "
   Print "'" + Trim(s1) + "'"
   Print "'" + Trim(s1, Any " .") + "'"

   Dim s2 As String = "BaaBaaaaB With You aaBBaaBaa"
   Print "'" + Trim(s2, "Baa") + "'"
   Print "'" + Trim(s2, Any "Ba") + "'"

   will produce the output:


   '... Stuck in the middle ...'
   'Stuck in the middle'
   'aaB With You aaB'
   ' With You '		

Platform Differences
   * DOS version/target of FreeBASIC does not support the wide-character 
     version of Trim.

Dialect Differences
   * Not available in the -lang qb dialect unless referenced with the 
     alias __Trim.
   * The string type suffix "$" is optional in the -lang fblite dialect.
   * The string type suffix "$" is ignored in the -lang fb dialect, warn 
     only with the -w suffix compile option (or -w pedantic compile 
     option).

Differences from QB
   * New to FreeBASIC

See also
   * LTrim 
   * RTrim

