Proposal 2: Exceptions and @nogc
Meta via Digitalmars-d
digitalmars-d at puremagic.com
Mon Apr 10 19:11:16 PDT 2017
On Tuesday, 11 April 2017 at 00:11:01 UTC, Adam D. Ruppe wrote:
> On Monday, 10 April 2017 at 23:16:48 UTC, Meta wrote:
>> My knee jerk reaction is that it's a very bad thing that "new"
>> means the same thing everywhere in the language (allocate and
>> initialize some GC-managed memory), except for this one case.
>
> Actually, in addition to user defined overloads (which are
> deprecated, granted), `new` also can mean stack allocation
> already! See the `scope` storage class and scope classes.
I don't agree as you have to add `scope` for the class to be
allocated on the stack.
> The language is free to optimize `new` as it sees fit. (IMO,
> that's the only real justification for it even being a built in
> language feature instead of an ordinary library function.) The
> real changes in this proposal are:
Yes, but it must be done in such a way that a user never knows
the difference. I have my doubts about whether replacing all heap
allocations in `throw new` expressions will be as transparent.
Actually it's already not as there are restrictions on catch
blocks that catch refcounted Exceptions.
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