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;
}
Exclusive Or—If obj is nil or false, returns false; otherwise, returns true.
static VALUE
false_xor(VALUE obj, VALUE obj2)
{
return RTEST(obj2)?Qtrue:Qfalse;
}