template Mixer() // Mixin
{
	char[] foo()
	{
		writef("[Mixer.foo] ");
		return "mixer";
	}
}

class Foo // Base class
{
	char[] foo()
	{
		writef("[Foo.foo] ");
		return "foo";
	}
}

class FooBar: Foo
{
	mixin Mixer mixer;
	
	
	char[] foo()
	{
		writef("[FooBar.foo] ");
		//return "foobar";
		//return mixer.foo() ~ super.foo();
		return mixer.foo(); // Actually calling FooBar.foo() (itself) ?
	}
}

int main()
{
	writefln("Result = %s", (new FooBar).foo());
	return 0;
}


Instead of printing out "[Mixer.foo] Result = mixer" it gets stuck in an infinite loop printing "[FooBar.foo] " and then ends up causing a stack overflow. It looks like mixer.foo() is actually calling FooBar.foo(). I would assume "mixin Mixer mixer;" would override Foo's foo() and FooBar's foo() would override mixer's.

Chris Miller schrieb am 2006-01-30:
> template Mixer() // Mixin
> {
> 	char[] foo()
> 	{
> 		writef("[Mixer.foo] ");
> 		return "mixer";
> 	}
> }
>
> class Foo // Base class
> {
> 	char[] foo()
> 	{
> 		writef("[Foo.foo] ");
> 		return "foo";
> 	}
> }
>
> class FooBar: Foo
> {
> 	mixin Mixer mixer;
> 
> 
> 	char[] foo()
> 	{
> 		writef("[FooBar.foo] ");
> 		//return "foobar";
> 		//return mixer.foo() ~ super.foo();
> 		return mixer.foo(); // Actually calling FooBar.foo() (itself) ?
> 	}
> }
>
> int main()
> {
> 	writefln("Result = %s", (new FooBar).foo());
> 	return 0;
> }
>
>
> Instead of printing out "[Mixer.foo] Result = mixer" it gets stuck in an infinite loop printing "[FooBar.foo] " and then ends up causing a stack overflow. It looks like mixer.foo() is actually calling FooBar.foo(). I would assume "mixin Mixer mixer;" would override Foo's foo() and FooBar's foo() would override mixer's.

Added to DStress as http://dstress.kuehne.cn/run/m/mixin_16_A.d http://dstress.kuehne.cn/run/m/mixin_16_B.d http://dstress.kuehne.cn/run/m/mixin_16_C.d http://dstress.kuehne.cn/run/m/mixin_16_D.d

Thomas