This is the legacy 4D documentation web site. Documentations are progressively being moved to developer.4d.com
Character Reference Symbols
Length
| Length ( string ) -> Function result | ||||||||
| Parameter | Type | Description | ||||||
| string | String |
|
String for which to return length | |||||
| Function result | Longint |
|
Length of string | |||||
Length is used to find the length of aString. Length returns the number of characters that are in aString.
Note: In Unicode mode, when you want to check whether a string contains any characters, including ignorable characters, you must use the test If(Length(vtAnyText)=0) rather than If(vtAnyText=""). If the string contains for example Char(1), which is an ignorable character, Length(vtAnyText) does return 1 but vtAnyText="" returns True.
This example illustrates the use of Length. The results, described in the comments, are assigned to the variable vlResult.
vlResult:=Length("Topaz") ` vlResult gets 5
vlResult:=Length("Citizen") ` vlResult gets 7
Product: 4D
Theme: String
Number:
16
Created: < 4D v6
4D Language Reference ( 4D v20 R7)
