Method `!()

Method `!
: int(0..1) `!(object|function arg)
int(1..1) `!(int(0..0) arg)
int(0..0) `!(mixed arg)
Description
: Negation operator.
Returns
: If arg is an object that implements lfun::`!(), that function will be called.

If arg is 0 (zero), a destructed object, or a function in a destructed object, 1 will be returned.

Otherwise 0 (zero) will be returned.
See also
: `==, `!=, lfun::`!()