Associative arrays

[Chris Piker]

On Tuesday, 18 May 2021 at 07:50:06 UTC, Ola Fosheim Grostad 
wrote:
> I hope it stays unimplemented. AAs should be replaced by a 
> library solution and AA literals should work with custom AAs. 
> The special casing is not good for metaprogramming.

I'm new to D and don't come from a hard-core C++ background.  On 
naive first take, the fact that D had a construct resembling 
python dictionaries made D more attractive. In fact, it was AAs 
that finally tipped me in favor of trying D.

Can you tell me more about why AAs are an undesirable language 
feature?