15.2 Boolean Operators
The
second operand, but not the first, will
be coerced from a string or an integer, or a list of one string or
one integer, to a boolean. Either operand will be coerced from a list
of one boolean to a boolean.
Syntax
boolean1 and boolean2
Description
Returns true if both operands are true. If the
first operand is false, the second operand won't
even be evaluated
("short-circuiting").
Syntax
boolean1 or boolean2
Description
Returns false if both operands are false. If the
first operand is true, the second operand won't even
be evaluated ("short-circuiting").
Syntax
not boolean
Description
Changes true to false and false to true.
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