AA char as key
wiley.andrew.j at gmail.com
Tue Jan 3 15:40:06 PST 2012
On Tue, Jan 3, 2012 at 4:20 PM, bearophile <bearophileHUGS at lycos.com> wrote:
> Andrew Wiley:
>> If the compiler is basically going to disallow using the AA as
>> anything but a long[string], it should really disallow declaring
>> anything with a mutable key type. Disallowing mutable keys at that
>> assignment site but allowing them in the type is confusing.
> Two related bug reports:
"Improving the compiler 'in' associative array can return just a bool"
Whether this is a good idea or not is a moot point. Changing this
would break too much code (basically all code that uses AAs
"Refuse definition too of impossible associative arrays"
This is what we're discussing.
Some consequences of actually changing this:
- This breaks D1 compatibility of AAs across the board because
immutable simply didn't exist then
- Significant D2 code breakage as well
We might see if Walter is willing to add this as a warning and/or
deprecation to see whether it's actually feasible to disallow it
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