C++ reference type

[BCS]

How about some sort of cast to l-value syntax that would be used from 
the calling code. It would generate a copy and pass a reference to it.
For that matter, any reason not to do that by default?

Dave wrote:
> 
[...]
> 
> 
> There's one more irritating limitation, and that is the ability to pass 
> a temporary byref:
> 
> private import std.stdio;
> void main()
> {
>     // error: (opCall)(100) is not an lvalue
>     writefln(foo(MyStruct(100),100));
> }
> int foo(inout MyStruct s, int i)
> {
>     return s.i * i;
> }
> struct MyStruct
> {
>     private int i = 0;
>     static MyStruct opCall(int i)
>     {
>         MyStruct s;
>         s.i = i;
>         return s;
>     }
> }
>