On 9/26/17 3:14 PM, bitwise wrote:
On Tuesday, 26 September 2017 at 17:27:02 UTC, Steven Schveighoffer wrote:
-Steve
About Variant - I was considering a pull request for retrieving a
pointer to the internal data, but figured that it was left out on
purpose due to @safety.
OTOH, I was looking through dmd commits, and it seems like there has
been significant progress on 'scope'.
So I was thinking this:
struct Variant {
scope inout(ubyte)[] data() inout
{
auto sz = type.tsize;
assert(sz <= size);
return store[0..sz];
}
}
Thoughts?
I just recently fixed Variant so it could accept shared data (so you
could pass shared data using std.concurrency), and part of that depends
on the fact that I know nothing else can point at the data (so no
locking/atomics are necessary, we know the actual data is not shared).
I think it's very dangerous to extract a reference to the data, it
breaks all kinds of expectations.
-Steve
