4D v20.1
Is a list
- 4D Language Reference
-
- Hierarchical Lists
-
- Managing Hierarchical Lists
- APPEND TO LIST
- CLEAR LIST
- Copy list
- Count list items
- DELETE FROM LIST
- Find in list
- GET LIST ITEM
- Get list item font
- GET LIST ITEM ICON
- GET LIST ITEM PARAMETER
- GET LIST ITEM PARAMETER ARRAYS
- GET LIST ITEM PROPERTIES
- GET LIST PROPERTIES
- INSERT IN LIST
- Is a list
- List item parent
- List item position
- LIST OF CHOICE LISTS
- Load list
- New list
- SAVE LIST
- SELECT LIST ITEMS BY POSITION
- SELECT LIST ITEMS BY REFERENCE
- Selected list items
- SET LIST ITEM
- SET LIST ITEM FONT
- SET LIST ITEM ICON
- SET LIST ITEM PARAMETER
- SET LIST ITEM PROPERTIES
- SET LIST PROPERTIES
- SORT LIST
4D v20.1
Is a list
Is a list
| Is a list ( list ) -> Function result | ||||||||
| Parameter | Type | Description | ||||||
| list | ListRef |
|
ListRef value to be tested | |||||
| Function result | Boolean |
|
TRUE if list is a hierarchical list FALSE if list is not a hierarchical list | |||||
The 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.
See example for the CLEAR LIST command.
See examples for the _o_DRAG AND DROP PROPERTIES command.
See also
PROPERTIES
Product: 4D
Theme: Hierarchical Lists
Number:
621
HISTORY
Created: 4D v6
ARTICLE USAGE
4D Language Reference ( 4D v20)
4D Language Reference ( 4D v20.1)
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