Syntax | (not exp) → True/Nil |
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Arguments | exp: The expression you want to negate. |
Returns | condition: True if the expression evaluates to Nil, otherwise Nil. If there is no expression, then always Nil |
Category | logical operator |
Description | Returns the logical negation of the expression. |
(not Nil) -> True (not True) -> Nil (not (eq 1 2)) -> True (not (gr 2 1)) -> Nil (not 5) -> Nil (not "foo") -> Nil (not not) -> Nil
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