On Tuesday, 4 July 2023 at 17:46:22 UTC, Steven Schveighoffer
wrote:
On 7/4/23 1:01 PM, Cecil Ward wrote:
I have a mutable dynamic array of dchar, grown by successively
appending more and more. When I wish to zap it and hand the
contents to the GC to be cleaned up, what should I do? What
happens if I set the .length to zero?
If you want to forget it so the GC can clean it up, set it to
`null`. If you set the length to 0, the array reference is
still pointing at it.
If you want to reuse it (and are sure that no other things are
referring to it), you can do:
```d
arr.length = 0;
arr.assumeSafeAppend;
```
Now, appending to the array will reuse the already-allocated
buffer space. Obviously, if you have data in there that is
still used, you don't want to use this option.
-Steve
Many many thanks for that tip, Steve!
