Signed word lengths and indexes

[Andrei Alexandrescu]

Walter Bright wrote:
> Alex Makhotin wrote:
>> Walter Bright wrote:
>>> Andrei and I went down that alley for a while. It's not practical.
>>>
>>
>> A link on the discussion or examples of unpractical explicit cast 
>> would be helpful to me to try to understand such decision.
> 
> I don't have one, the message database of this n.g. is enormous. You can 
> try the search box here:
> 
> 
> http://www.digitalmars.com/d/archives/digitalmars/D/index.html

The discussions about polysemous types should be relevant. We tried to 
fix things quite valiantly. Currently I believe that improving value 
range propagation is the best way to go.

Andrei