Question: allocator parameter

[nrc]

I currently follow Vec and have an allocator type parameter with default type set to Global. However, to be useful, users of OwnedBuf also need to have such a type parameter (i.e., not use the default), and in the case of OwnedRead that inhibits using it as a trait object.

[nrc]

The only place we use the allocator at the moment is to pass to the destructor function. If we take a closure, then the allocator could be captured maybe? Then we wouldn't need the allocator type param at all

[nrc]

If we take a closure, then the allocator could be captured maybe?

This doesn't work without boxing the closure or allocator and we want to avoid depending on that.

I think I will remove the allocator stuff for now, and if needed we can add it later