Determines whether or not a list is nil
Supported Platforms: Windows, Mac OS, and Web
Signature
(vl-consp list-variable)
- list-variable
-
Type: Integer, Real, String, List, Subroutine, Ename (entity name), T, nil, or catch-all-apply-error
A list.
Return Values
Type: T or nil
T, if list-variable is a list and is not nil; otherwise nil.
Remarks
The vl-consp function determines whether a variable contains a valid list definition.
Examples
(vl-consp nil) nil (vl-consp t) nil (vl-consp (cons 0 "LINE")) T