Dynamic Arrays & Class Properties

[Jarrett Billingsley]

"Mason Green" <mason.green at gmail.com> wrote in message 
news:g93sue$k3v$1 at digitalmars.com...
> Denis Koroskin Wrote:
>
>> maybe something like this:
>>
>> struct ConstArrayReference(T)
>> {
>>          T opIndex(int index) {
>>                  return array[index];
>>          }
>>
>>          private T[] array;
>> }
>>
>> class Foo
>> {
>>      private int[] m_dummy;
>>
>>      this() {
>>          m_dummy ~= 19;
>>          m_dummy ~= 77;
>>      }
>>
>>      ConstArrayReference!(int) dummy() {
>>          ConstArrayReference!(int) r = { m_dummy };
>>          return r;
>>      }
>> }
>>
>> void main() {
>>      auto foo = new Foo();
>>      Cout(foo.dummy[0]).newline;     // Prints 19
>> }
>>
>>
>> Too bad we don't have references (yet?) :(
>
> Thanks for the smart solution!
>
> Unfortunately this seems like a lot of extra overhead... I may just end up 
> keeping the dynamic arrays public!

There's no memory/register overhead; ConstArrayReference!(T).sizeof == 
(T[]).sizeof.

And if you use -inline, there's no function call overhead either.  :)