implicitly convert function pointers to delegates

[Moritz Warning]

Hi,

some people discovered that functions can be wrapped into delegates 
without allocation.

Here is one out of several similar solutions:

R delegate(T) toDg(R, T...)(R function(T) fp) {
    struct dg {
        R opCall(T t) {
            return (cast(R function(T)) this) (t);
        }
    }
    R delegate(T) t;
    t.ptr = fp;
    t.funcptr = &dg.opCall;
    return t;
}

I would like to ask if we can get this into the language?
It would make working with delegates and function pointers much more 
easier when function pointers implicitly convert to delegates when they 
"have to".