Rebol Programming/unset?

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USAGE:[edit | edit source]

UNSET? value 

DESCRIPTION:[edit | edit source]

Returns TRUE for unset values.

UNSET? is an action value.

ARGUMENTS[edit | edit source]

  • value -- (Type: any-type)

SOURCE CODE[edit | edit source]

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