411 REFERENCE · Wikibooks
Rebol Programming/none?
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
USAGE:
NONE? value
DESCRIPTION:
Returns TRUE for none values.
NONE? is an action value.
ARGUMENTS:
value -- (Type: any-type)
SOURCE CODE
none?: native["Returns TRUE for none values." value [any-type!] 27]