Dynamic Arrays & Class Properties

[Jarrett Billingsley]

"Denis Koroskin" <2korden at gmail.com> wrote in message 
news:op.ugl05wn1o7cclz at proton.creatstudio.intranet...
> On Thu, 28 Aug 2008 22:22:44 +0400, Sergey Gromov <snake.scaly at gmail.com> 
> wrote:
>
>> Mason Green <mason.green at gmail.com> wrote:
>>> Hi,
>>>
>>> Anyone know how to expose dynamic array elements via class properties? 
>>> I would like to do something this this:
>>>
>>> class Foo {
>>>
>>>     private int[] m_dummy;
>>>
>>>     this() {
>>>         m_dummy ~= 19;
>>>         m_dummy ~= 77;
>>>     }
>>>
>>>     int dummy( ??????? ) {
>>>         return m_dummy[x];
>>>     }
>>> }
>>>
>>> void main() {
>>>     auto foo = new Foo();
>>>     Cout(foo.dummty[0]);     // Print 19
>>> }
>>>
>>> Any help would be much appreciated!  The question marks are where I'm 
>>> stuck....
>>
>> class Foo {
>>     private int[] m_dummy;
>>     const int dummy() {
>>         return m_dummy;
>>     }
>> }
>>
>> I think this is better than tons of templates.
>>
>
> First, it should be like this:
>
> class Foo {
>     this()
>     {
>         m_dummy = new int[1];
>         m_dummy[0] = 19;
>     }
>
>     const(int)[] dummy() {
>         return m_dummy;
>     }
>
>     private int[] m_dummy;
> }
>
> Second, that's D2 :)
>
> That's kinda strange, but unfortunately most of the discussion here is 
> about D1, not D2 :(
> There is no const in D1:
>
> const int[] test = [0, 1, 2, 3];
> test[0] = 2;
>
> writefln(test[0]); // prints 2

On Windows.  I'd bet that'd give you a segfault on Linux.  Though it doesn't 
change the fact that it's actually incorrect and that the compiler really 
*should* give an error for it.