Associative arrays give compile error

[Bob Cowdery]

 On 05/10/2010 12:04, Denis Koroskin wrote:
> On Tue, 05 Oct 2010 14:57:22 +0400, Bob Cowdery
> <bob at bobcowdery.plus.com> wrote:
>
>>  On 05/10/2010 11:45, Denis Koroskin wrote:
>>> On Tue, 05 Oct 2010 14:23:47 +0400, Bob Cowdery
>>> <bob at bobcowdery.plus.com> wrote:
>>>
>>>>  I can't seem to get any sense out of associative arrays. Even the
>>>> simplest definition won't compile so I must be doing something daft.
>>>>
>>>> int[string] aa = ["hello":42];
>>>>
>>>> Error: non-constant expression ["hello":42]
>>>>
>>>> What exactly is not constant about this. The example is straight
>>>> out the
>>>> book. Using D 2.0.
>>>>
>>>> bob
>>>
>>> What exactly compiler version are you using (run dmd with no args)?
>>> Works perfectly fine here (dmd2.049).
>>
>> It says 2.049. How odd. I've got a fair amount of code and everything
>> else compiles fine.
>
> Can you please post complete code snippet that fails to compile?
>
> Here is the code I used to test:
>
> module aa;
>
> import std.stdio;
>
> void main()
> {
>     int[string] aa = ["hello":42];
>     writeln(aa["hello"]);
> }
>
> # dmd -run aa.d

Ah! It's some other code below it that is not giving an error but
causing the error above. So the compiler is getting confused. What I was
actually trying to do was create an associative array with a string as a
key and a Tuple as the value. Now

auto aa = [
    "some string": (100.0, 6100.0)
]

compiles but is clearly wrong and gives rise to other errors.  Does
anyone know the correct way to define this and then access the tuple.