change 'this' pointer for structs to reference type

[Moritz Warning]

On Sun, 02 Nov 2008 21:03:26 +0100, Simen Kjaeraas wrote:

> On Sun, 02 Nov 2008 20:26:23 +0100, Moritz Warning
> <moritzwarning at web.de> wrote:
> 
>> On Sun, 02 Nov 2008 00:01:24 -0700, Walter Bright wrote:
>>
>>> Andrei suggested this change, and I think it is a great idea. D ought
>>> to be moving away from pointers for routine work, and this would make
>>> a lot of sense.
>>>
>>> It would entail some changes to user code, mostly when dealing with
>>> the opCmp and opEquals member functions. The function signatures for
>>> them would be changed to opCmp(ref const S).
>>
>> It's not clear to me what the effect would be on the usage.
>>
>> struct Foo
>> {
>>    int OpIndex(size_t){}
>> }
>>
>> Foo foo = new Foo();
>> foo[42];
>>
>> Could we do call opIndex now because this of Foo is a reference? It
>> would be nice.
>> But it might be "ref Foo foo = new Foo();" because it bites "Foo foo;"
>> otherwise.
>>
>> Or am I off the track?
> 
> You're somewhat off track. Foo foo = new Foo(); will not compile, as new
> Foo would still return a Foo*. auto foo = new Foo(); foo[42]; would
> work, though.

Thanks.
It's a hassle to have to do (*foo)[42].