lastIndexOf

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Last updated: Oct 22, 2021 by Jonathan Muse

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Availability

This routine is available starting with SIL Engine™ 2.5.17 / 2.6.9.

Syntax

lastIndexOf(str1, str2)

Description

Returns the index of the last match of the str2 in str1 or -1 if str2 is nowhere to be found in str1.

Returns the index within a string of the last occurrence of the specified substring.

Parameters

Parameter name

Type

Required

Description

str1

string

Yes

Specifies a character expression to search for str2.

str2

string

Yes

Specifies a character expression to search for in str1.

Return type

number

Example

Example 1

wret = lastIndexOf("f1/f2/f3", "/f");
print("Return " + wret);

Print Return 5

Example 2

wret = lastIndexOf("f1/f2/f3", "/fi");
print("Return " + wret);

Print Return -1

Example 3

wret = lastIndexOf("f1/f2", "");
print("Return " + wret);

Print Return 5

Notes

The last occurrence of the empty string "" is considered to occur at the index value str1.length().
If you need to find str2 multiple times use substring() routine.

See also