Associative arrays give compile error
bob at bobcowdery.plus.com
Tue Oct 5 04:08:39 PDT 2010
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.
>>> 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];
> # 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.
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