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; }
'nuf said…
static VALUE false_to_s(VALUE obj) { return rb_usascii_str_new2("false"); }
Or—Returns false
if obj is nil
or false
; true
otherwise.
static VALUE false_or(VALUE obj, VALUE obj2) { return RTEST(obj2)?Qtrue:Qfalse; }
Ruby Core © 1993–2016 Yukihiro Matsumoto
Licensed under the Ruby License.
Ruby Standard Library © contributors
Licensed under their own licenses.