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(obj, obj2) VALUE obj, obj2; { return RTEST(obj2)?Qtrue:Qfalse; }
Exclusive Or—Returns true
if obj is nil
or false
, false
otherwise.
static VALUE true_xor(obj, obj2) VALUE obj, obj2; { return RTEST(obj2)?Qfalse:Qtrue; }
The string representation of true
is “true”.
static VALUE true_to_s(obj) VALUE obj; { return rb_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(obj, obj2) VALUE obj, obj2; { return Qtrue; }