Class: TrueClass

Inherits:

Object

• Object
• TrueClass

Defined in:

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

• #&(obj) ⇒ Boolean

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

• #^(obj) ⇒ Object

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

• #to_s ⇒ Object

  The string representation of true is "true".

• #|(obj) ⇒ true

  Or---Returns true.

Instance Method Details

#&(obj) ⇒ Boolean

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

Returns:

• (Boolean)

# File 'object.c'

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

#^(obj) ⇒ Object

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

# File 'object.c'

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

#to_s ⇒ Object

The string representation of true is "true".

# File 'object.c'

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

#|(obj) ⇒ 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

Returns:

• (true)

# File 'object.c'

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