The global value true
is the only instance of class TrueClass
and represents a logically true value in boolean expressions. The class provides operators allowing true
to be used in logical expressions.
And—Returns false
if obj is nil
or false
, true
otherwise.
static VALUE true_and(VALUE obj, VALUE obj2) { return RTEST(obj2)?Qtrue:Qfalse; }
Exclusive Or—Returns true
if obj is nil
or false
, false
otherwise.
static VALUE true_xor(VALUE obj, VALUE obj2) { return RTEST(obj2)?Qfalse:Qtrue; }
The string representation of true
is “true”.
static VALUE true_to_s(VALUE obj) { return rb_usascii_str_new2("true"); }
Or—Returns true
. As obj is an argument to a method call, it is always evaluated; there is no short-circuit evaluation in this case.
true | puts("or") true || puts("logical or")
produces:
or
static VALUE true_or(VALUE obj, VALUE obj2) { return Qtrue; }
Ruby Core © 1993–2016 Yukihiro Matsumoto
Licensed under the Ruby License.
Ruby Standard Library © contributors
Licensed under their own licenses.