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Rebol Programming/unset?

< Rebol Programming

USAGE:Edit

UNSET? value

DESCRIPTION:Edit

Returns TRUE for unset values.

UNSET? is an action value.

ARGUMENTSEdit

  • value -- (Type: any-type)

SOURCE CODEEdit

unset?: native["Returns TRUE for unset values." value [any-type!] 1]
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