ObjectPascal
Trim
Function
Removes leading and trailing blanks from a string SysUtils unit
1  function Trim ( const Text : String ) : String;
2  function Trim ( const Text : WideString ) : WideString;
Description
The Trim function removes blank and control characters (such as line feed) from the start and end of a string.
Notes
Use TrimLeft or TrimRight to limit the operation to just one end of the string.
Related commands
AnsiLeftStr Extracts characters from the left of a string
AnsiMidStr Returns a substring from the middle characters of a string
AnsiRightStr Extracts characters from the right of a string
Delete Delete a section of characters from a string
TrimLeft Removes leading blanks from a string
TrimRight Removes trailing blanks from a string
 
Example code : Illustrating Trim, TrimLeft and TrimRight
const
  PaddedString = '  Letters     ';
begin
  WriteLn('[' + TrimLeft(PaddedString)  + ']');
  WriteLn('[' + TrimRight(PaddedString) + ']');
  WriteLn('[' + Trim(PaddedString)      + ']');
end;
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   [Letters     ]
   [  Letters]
   [Letters]