Other operators

not

Mainly used in boolean expressions, it turns TRUE expressions (<> 0) FALSE, and FALSE expressions (== 0) TRUE.

Examples:

(= Result (not TRUE)) ; the result will be FALSE

(= Result (not FALSE)) ; the result will be TRUE

(= Result (not 5)) ; the result will be 0

(= Result (not 0)) ; the result will be 1

-

Negates integers. If the number is positive, it will become negative. If the number is negative, it will become positive.

Examples:

(= Result (- 10)) ; the result will be -10
(= Result -10) ; the result will be -10. In this case, -10 is a :doc:`numericliteral`.
(= Result (- SomeVar) ; the result will be the negative of SomeVar