Skip to main content
Version: 20 R7 BETA

Is a list

Is a list ( list ) : Boolean

ParameterTypeDescription
listInteger→ListRef value to be tested
Function resultBoolean←TRUE if list is a hierarchical list FALSE if list is not a hierarchical list

This command is not thread-safe, it cannot be used in preemptive code.

Description​

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.

Example 1​

See example for the CLEAR LIST command.

Example 2​

See examples for the _o_DRAG AND DROP PROPERTIES command.

See also​

_o_DRAG AND DROP PROPERTIES