The global value false
is the only instance of class FalseClass and represents a logically false
value in boolean expressions. The class provides operators allowing
false
to participate correctly in logical expressions.
And—Returns false
. obj is always evaluated as it is
the argument to a method call—there is no short-circuit evaluation in this
case.
static VALUE false_and(VALUE obj, VALUE obj2) { return Qfalse; }
Case Equality – For class Object, effectively the
same as calling #==
, but typically overridden by descendants
to provide meaningful semantics in case
statements.
#define case_equal rb_equal
Exclusive Or—If obj is nil
or false
,
returns false
; otherwise, returns true
.
#define false_xor true_and