Is a list
Is a list* ( list ) : Boolean
| Parameter | Type | Description | |
|---|---|---|---|
| list | Integer | → | ListRef value to be tested |
| Function result | Boolean | ← | TRUE if list is a hierarchical list FALSE if list is not a hierarchical list |
Description
he Is a list command returns TRUE if the value you pass in list is a valid reference to a hierarchical list. Otherwise, it returns FALSE.
Example
See example for the CLEAR LIST command.
Properties
| Command number | 621 |
| Thread safe | ✗ |