Delphi Basics : LastDelimiter command

DelphiBasics

LastDelimiter
Function

Find the last position of selected characters in a string

SysUtils unit

function LastDelimiter(const Delimiters, Source string):Integer;

Description

The LastDelimiter function finds the last occurence of any of a set of Delimiter characters in a Source string.

If found, the position is returned. Otherwise, 0 is returned.

Notes

Strings start with 1 as the first character.

Related commands

AnsiPos		Find the position of one string in another
StrScan		Searches for a specific character in a constant string

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Example code : Find the last position of 1 or more characters in a string

var
  source, find : string;
  position     : Integer;

begin
  // Create a string
  source := '12345678901234567890';

  // Find the position of the last 1
  position := LastDelimiter('1', source);
  ShowMessage('The last 1 is at '+IntToStr(position));

  // Find the position of the last 2, 4 or 6
  position := LastDelimiter('246', source);
  ShowMessage('The last 2, 4 or 6 is at '+IntToStr(position));
end;

Show full unit code

The last 1 is at 11
The last 2, 4 or 6 is at 16