public Prog2()
{
var factory = new CommandFactory2();
factory.Register("A", new Lazy <Action>(() => new A().DoA));
factory.Register("B", new Lazy <Action>(() => new B().DoB));
factory.Register("C", new Lazy <Action>(() => factory.DoStuff));
factory.Execute("A");
}
public Prog2()
{
var factory = new CommandFactory2();
factory.Register("A", new Lazy <Action>(() => new A().DoA));
B b = null;
Func <B> my = () => b ?? (b = new B());
factory.Register("B", new Lazy <Action>(() =>
{
var v = my();
return(v.DoB);
}));
factory.Register("C", new Lazy <Action>(() => factory.DoStuff));
factory.Execute("A");
}
public Prog2()
{
var factory = new CommandFactory2();
factory.Register("A", new Lazy <Command>(
() =>
{
var a = new A();
return(new Command(a.DoA, a.UndoA));
}));
factory.Register("B", new Lazy <Command>(
() =>
{
var c = new B();
return(new Command(c.DoB, c.DoB));
}));
factory.Register("C", new Lazy <Command>(
() => new Command(DoStuff, UndoStuff)));
factory.Execute("A");
}