clear()

[Jacob Carlborg]

On 10/9/09 18:40, Andrei Alexandrescu wrote:
> I'm talking with Sean and Walter about taking the first step towards
> eliminating delete: defining function clear() that clears the state of
> an object. Let me know of what you think.
>
> One problem I encountered is that I can't distinguish between a default
> constructor that doesn't need to exist, and one that was disabled
> because of other constructors. Consider:
>
> class A {}
> class B { this(int) {} }
>
> You can evaluate "new A" but not "new B". So it's legit to create
> objects of type A all default-initialized. But the pointer to
> constructor stored in A.classinfo is null, same as B.
>
> Any ideas?
>
>
> Andrei

How about this:

static if (is(typeof({
		auto t = new T;
	})))