Len Function

Purpose

Determines the length of a character string, a string in a Variant or the size of a user defined type.

Syntax

Len(a$ | vstr | udt)

Description

Determines the number of characters contained within a string expression and returns this value.

For user defined types and their variables, Len(Type) and Len(var) return the length of the Types and the Type variable respectively.

Example

OpenW # 1

Print Len("Hello world")        //prints 11

Print Len(" Hello world ")      //prints 13

Remarks

Len returns the wrong value for a string in a Variant array: it returns the length of the Variant data type rather than the string - use VstrLen instead.

$Library "GfaWinX"

Global Variant x = "abcdefghijklmnopqrstuvwxyz"

Global z(3) As Variant

z(0) = "abcdefghijklmnopqrstuvwxyz"

z(1) = "abc"

Print x `Len(x)       // Is okay because no array

Print z(0)`Len(z(0))`VStrLen(z(0))  // Shows 16, is 26 - VStrLen shows 26

Print z(1)`Len(z(1))`VStrLen(z(1))  // Shows 16, is 3 - VStrLen shows 3

Len acts as SizeOf for Variant arrays and will always return 16, the size of a Variant.

See Also

SizeOf, Variant, VstrLen.

{Created by Sjouke Hamstra; Last updated: 06/03/2022 by James Gaite}