Syntax
EMPTY? word or list
Explanation
EMPTY? outputs TRUE if the input is the empty word (" ) or the empty list ([]); otherwise, it outputs FALSE.
Examples
? EMPTY? [3 26 56]
Result: FALSE
? MAKE "FRUIT "
? EMPTY? :FRUIT
Result: TRUE
? MAKE "FRUIT [PAPAYA]
? EMPTY? :FRUIT
Result: FALSE
? EMPTY? BUTFIRST :FRUIT
Result: TRUE
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