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Changes between Version 5 and Version 6 of SingletonPattern

Author:: csauls (IP: 76.177.172.234)
Timestamp:: 08/23/07 22:39:02 (17 years ago)
Comment:: Fixed another typo -- instace -> instance -- and updated the mixin examples to use 'typeof(this)' -- simplifies usage.

v5	v6
47	47
48	48	/* This is the mixin for a quick basic implementation of a Singleton.
49		* Note the use of a static variable local to the method.
	49	* Note the use of a static variable local to the method, and the special 'typeof(this)'
	50	* type expression which allows the mixin to work without knowing the class using it.
50	51	*/
51		template MSingleton (C) {
	52	template MSingleton () {
52	53
53		public static C instance () {
54		static C _instance;
	54	public static typeof(this) instance () {
	55	static typeof(this) _instance;
55	56
56	57	if (_instance is null)
57		_instance = new C;
	58	_instance = new typeof(this);
58	59
59		return _instace;
	60	return _instance;
60	61	}
61	62
68	69	class Foo : ISingleton {
69	70
70		mixin MSingleton~~!(Foo)~~;
	71	mixin MSingleton;
71	72
72	73	protected this () {