On Thursday, 4 July 2013 at 15:27:17 UTC, Timon Gehr wrote:
On 07/04/2013 04:35 PM, Andrei Alexandrescu wrote:
On 7/4/13 6:32 AM, Steven Schveighoffer wrote:
I would not be opposed to a pull request that made [] be
non-null, as
long as it doesn't allocate.
What would be the benefits?
Andrei
- Additional sentinel values at basically no cost.
- No accidental flawed relying on empty array is null or empty
array !is null.
(i.e. less nondeterminism.)
- One thing less to discuss (this has come up before.)
There are no benefits to making "[]" return null either.
Implementation wise, instead of returning a void[] with "ptr ==
0x0" and "length == 0", it could just as well return a void[]
with "ptr == 0x1" and "length == 0".
You'd get better behavior at no extra cost.
