REBOL Programming/unset?
< REBOL ProgrammingUSAGE:
UNSET? value
DESCRIPTION:
Returns TRUE for unset values.
UNSET? is an action value.
ARGUMENTS
- value -- (Type: any-type)
SOURCE CODE
unset?: native["Returns TRUE for unset values." value [any-type!] 1]
This article is issued from Wikibooks. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.