Re: indexing a tuple containing a struct strange result

[Ali Çehreli]

On 06/23/2013 09:40 PM, Anthony Goins wrote:

> On Monday, 24 June 2013 at 01:22:12 UTC, cal wrote:
>>     Tuple!(S) foo() { return tuple(this); }

> import std.stdio, std.typecons;
>
> struct S
> {
>      int x;
>      int y;
>      int z;
>
>      auto foo() { return tuple(this.tupleof); }
> }
>
> void main()
> {
>      S s;
>      s.x = 8;
>      s.y = 9;
>      s.z = 10;
>      writeln((s.foo()));     //output: Tuple!(int, int, int)(8, 9, 10)
>
>      writeln(s.foo()[2]);  //output: 10
> }
>
> Is this what you expected?

I think the OP is asking about the difference from when foo() is a 
non-member function:

import std.stdio, std.typecons;

struct S
{
    int x;
}

Tuple!(S) foo(S s)
{
    return tuple(s);
}

void main()
{
    S s;
    s.x = 8;
    writeln((s.foo()));     //output: Tuple!(S)(S(8))
    writeln((s.foo())[0]);  //output: S(8)
}

This time the output is S(8).

I think it is a compiler bug.

Ali