DIP 1002 (TryElseExpression) added to the queue

[John Colvin via Digitalmars-d]

On Wednesday, 28 September 2016 at 10:50:00 UTC, Jack Stouffer 
wrote:
> On Wednesday, 28 September 2016 at 10:45:11 UTC, Andrei 
> Alexandrescu wrote:
>> Assertions such as "makes the code cleaner" are likely to add 
>> value only if backed up by evidence (case studies, realistic 
>> examples).
>
> This is based on my anecdotal experience. I also posted an 
> example in the original thread which was included in the DIP.
>
>> Porting motivating arguments from other languages is helpful 
>> only if put in the context of D, e.g. Python does not have 
>> "scope" statements, which makes matters different across the 
>> two languages.
>
> It was already shown in this thread how scope statements do not 
> achieve the same effect as the try/else statement; the point 
> still stands.

Yes, scope can't immitate catch else without a flag. It doesn't 
follow that therefore we need catch else.

What realistic code will be made significantly better by having 
it? Under what circumstances is structuring the code differently 
or using a flag so unacceptable that a new language feature is 
worth it?

That's the question that needs answering.