A couple of extensions to `with` that would be worthwhile
geod24 at gmail.com
Thu Oct 14 02:30:14 UTC 2021
On Wednesday, 13 October 2021 at 19:30:43 UTC, Andrei
> On 2021-10-13 15:28, Adam D Ruppe wrote:
>> On Wednesday, 13 October 2021 at 19:18:55 UTC, Andrei
>> Alexandrescu wrote:
>>> The point is that with keeps the entire expression live, even
>>> if you only care about a part of it:
>> OK, that explains things now. I see what you're going for.
>> Not in love with it being `with` that works differently than
>> the other `with`s but it kinda makes sense anyway.
>> The lambda pattern though does have a few other advantages...
>> I think it is generally easier to use... but gotta chew on it
>> a bit.
> One major issue with the lambda pattern is composition. Every
> layer of composition introduces yet another scope AND
> parenthesis level. That doesn't scale well at all.
The lack of composability is annoying, but how often is it
practically a problem ? Those functions are used for D to C
string conversion, so in practice they are always at the end of
the pipeline (just like `each` is). I don't really see how those
could justify a new language feature.
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