Bad AA behavior

[Kirk McDonald]

BCS wrote:
> Good point. But what about this
> 
> void main()
> {
>     byte[char[]] set;
>     char[] it = "it".dup;
>     set[it] = 0;
>     assert("it" in set);    // pass
>     it[0] = 'a';
>     it[1] = 'a';
>     assert(set.keys[0] in set);    // fail
> }
> 
> Furthermore, once the underling data is changed, the member can't be 
> accessed even to remove it.
> 
> set.remove(set.keys[0]); // has no effect
> 
> I'll admit that I don't known what to do with the object/struct case, 
> but I think the current behavior isn't good.

And this is why dictionary keys are required to be immutable in Python 
(and numbers, strings, and tuples are all immutable types).

-- 
Kirk McDonald
Pyd: Wrapping Python with D
http://pyd.dsource.org