Better handling of noncopyable objects and objects with this(this)

[ketmar via Digitalmars-d]

On Mon, 01 Jun 2015 11:03:29 +0000, Namespace wrote:

> What about ----
> auto h = &r.front; // can get the front of the range ----
> ?

there is funnier trick:
  static void testfront(T) (auto ref T n) {} testfront(r.front);

the thing is that we don't really want to check if we can take an address 
of front value, we want to keep `ref` if it's there. with this magic 
template `ref` is not stripped, but we still don't require "&" to work.
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