[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'System' (#rtl)

SetLength

Set length of a string.

Declaration

Source position: system.fpd line 70

procedure SetLength(

  var S: AStringType;

  Len: Integer

);

procedure SetLength(

  var A: DynArrayType;

  Len: Integer

);

Description

SetLength sets the length of the string S to Len. S can be an ansistring, a short string or a widestring. For ShortStrings, Len can maximally be 255. For AnsiStrings it can have any value. For AnsiString strings, SetLength \emph{must} be used to set the length of the string.

In the case of a dynamical array A, setlength sets the number of elements. The elements are numbered from index 0, so the count runs from 0 to Len-1. If Zero is specified, the array is cleared.

Errors

None.

See also

Length

  

Returns length of a string or array.

Example

Program Example85;

{ Program to demonstrate the SetLength function. }

Var S : String;

begin
  Setlength(S,100);
  FillChar(S[1],100,#32);
  Writeln ('"',S,'"');
end.

Documentation generated on: Nov 16 2015