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Class: TrueClass

Relationships & Source Files
Inherits: Object
Defined in: object.c,
object.c

Overview

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.

Instance Method Summary

Instance Method Details

#&(obj) ⇒ Boolean

And—Returns false if obj is nil or false, true otherwise.

[ GitHub ]

  
# File 'object.c', line 1524

static VALUE
true_and(VALUE obj, VALUE obj2)
{
    return RTEST(obj2)?Qtrue:Qfalse;
}

#===(other) ⇒ Boolean

Alias for NilClass#===. Case Equality – For class ::Object, effectively the same as calling #==, but typically overridden by descendants to provide meaningful semantics in case statements.

#^(obj) ⇒ !obj

Exclusive Or—Returns true if obj is nil or false, false otherwise.

[ GitHub ]

  
# File 'object.c', line 1562

static VALUE
true_xor(VALUE obj, VALUE obj2)
{
    return RTEST(obj2)?Qfalse:Qtrue;
}

#to_s ⇒ "true" #inspect ⇒ "true"

Alias for #to_s.

#to_s ⇒ "true" Also known as: #inspect

The string representation of true is “true”.

[ GitHub ]

  
# File 'object.c', line 1509

static VALUE
true_to_s(VALUE obj)
{
    return rb_usascii_str_new2("true");
}

#|(obj) ⇒ 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
[ GitHub ]

  
# File 'object.c', line 1546

static VALUE
true_or(VALUE obj, VALUE obj2)
{
    return Qtrue;
}