DIP69 - Implement scope for escape proof references
Daniel N via Digitalmars-d
digitalmars-d at puremagic.com
Sat Dec 6 02:59:22 PST 2014
On Friday, 5 December 2014 at 16:48:45 UTC, Marc Schütz wrote:
> There are limitations this proposal has in comparison to my
> original one. These limitations might of course be harmless and
> play no role in practice, but on the other hand, they may, so I
> think it's good to list them here.
>
One concern I had with your proposal was that it refers to a
symbol before it's available.
scope!haystack(string) findSubstring(scope(string) haystack,
scope(string) needle)
C++11 had similar issues and they solved it by introducing
trailing return types.
ex:
"template<class T>
auto mul(T a, T b) -> decltype(a*b)"
Personally I would prefer not to go down that lane and DIP69
avoids that problem.
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