System.SysUtils.TStringHelper.IndexOf
Delphi
function IndexOf(value: Char): Integer; overload; inline;
function IndexOf(const Value: string): Integer; overload; inline;
function IndexOf(Value: Char; StartIndex: Integer): Integer; overload;
function IndexOf(const Value: string; StartIndex: Integer): Integer; overload;
function IndexOf(Value: Char; StartIndex: Integer; Count: Integer): Integer; overload;
function IndexOf(const Value: string; StartIndex: Integer; Count: Integer): Integer; overload;
Contents
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | System.SysUtils.pas | System.SysUtils | TStringHelper |
Description
Returns an integer that specifies the position of the first occurrence of a character or a substring within this 0-based string, starting the search at StartIndex.
This method returns -1 if the value is not found or StartIndex specifies an invalid value.
This method uses the following parameters:
StartIndexspecifies the initial offset in this 0-based string where the search starts.Countspecifies the length of the substring to search for.
Example
var
MyString: String;
begin
MyString := 'This is a string.';
Writeln(MyString.IndexOf('s', 8, 4));
Writeln(MyString.IndexOf('is', 0));
end.
Output:
10 2