Class: FalseClass (Ruby 2.3.4)

    In Files

    • object.c

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    FalseClass

    The global value false is the only instance of class FalseClass and represents a logically false value in boolean expressions. The class provides operators allowing false to participate correctly in logical expressions.

    Public Instance Methods

    false & obj → false click to toggle source
    nil & obj → false

    And—Returns false. obj is always evaluated as it is the argument to a method call—there is no short-circuit evaluation in this case.

     
                   static VALUE
    false_and(VALUE obj, VALUE obj2)
    {
        return Qfalse;
    }
                
    obj === other → true or false click to toggle source

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

     
                   VALUE
    rb_equal(VALUE obj1, VALUE obj2)
    {
        VALUE result;
    
        if (obj1 == obj2) return Qtrue;
        result = rb_funcall(obj1, id_eq, 1, obj2);
        if (RTEST(result)) return Qtrue;
        return Qfalse;
    }
                
    false ^ obj → true or false click to toggle source
    nil ^ obj → true or false

    Exclusive Or—If obj is nil or false, returns false; otherwise, returns true.

     
                   static VALUE
    false_xor(VALUE obj, VALUE obj2)
    {
        return RTEST(obj2)?Qtrue:Qfalse;
    }
                
    inspect() click to toggle source
    Alias for: to_s
    to_s → "false" click to toggle source

    ‘nuf said…

     
                   static VALUE
    false_to_s(VALUE obj)
    {
        return rb_usascii_str_new2("false");
    }
                
    Also aliased as: inspect
    false | obj → true or false click to toggle source
    nil | obj → true or false

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

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