Name:
!
boolean NOT operator
Usage:
!
expr
:
boolean
->
boolean
Parameters:
expr
represents a boolean expression
Description:
!
evaluates to the boolean NOT of the boolean expression
expr
.
!
expr
evaluates to true iff
expr
does not evaluate to true.
Example 1:
> ! false;
true
Example 2:
> ! (1 == exp(0));
false
See also:
&&
,
||
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