On Friday, 14 August 2015 at 06:48:27 UTC, Adel Mamin wrote:
Compiler dmd_2.068.0-0_amd64.deb on Ubuntu 12.04 Linux:

auto lookup = [ "one":1, "two":2 ];

The dmd error:
Error: non-constant expression ["one":1, "two":2]

Why doesn't it compile?
As a workaround I could do the assignment one element at a time in a loop. It would be uglier though.

It's because of the key type (string is a library type). You have to initialize it by hand. Explanation here:

http://stackoverflow.com/a/26862994/3661500

see the comment of Adam D. Ruppe. Although this case was 'a bit' different since the AA had to be immutable (in this case it was only possible to initialize it in a static module constructor or in class/struct constructor). But it's almost the same problem.

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