[Issue 4215] Intrduce auto ref parameters for class template variables

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=4215

RazvanN <razvan.nitu1305 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |razvan.nitu1305 at gmail.com
         Resolution|---                         |WONTFIX

--- Comment #5 from RazvanN <razvan.nitu1305 at gmail.com> ---
This code compiles:

void bar(T)(auto ref T item)
{
}

void main()
{
        int i;
        bar!(int)(i); 
}

This code also compiles:

template bar(T)
{
        void bar(auto ref T item)
        {
        }
}

void main()
{
    int a;
    bar(2);
    bar(a);
}

This, however, does not compile:

class Foo(T)
{
    void bar(auto ref T item)
    {
    }
}

void main()
{
        Foo!(int) f;
}

And it cannot compile since once you instantiate Foo the compiler needs to know
how to instantiate bar. Since bar is not a templated function the compiler
cannot resolve `auto ref` and therefor correctly outputs the error that `auto
ref` parameters are allowed only for templated functions. The easy fix is to
template bar.

This enhancement request is invalid.

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