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 anObject 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; }