On 05/26/2010 04:47 PM, Steven Schveighoffer wrote:
b) associative arrays can define c[a .. b] for a, b key types.
It's nontrivial but it can be done.
I decided for dcollections that this only makes sense on sorted maps.
Yah, I meant sorted collections as well.
c) sentinel-terminated arrays (e.g. C stringz) can only define c[a
.. $] for an integral a.
I really hope we are not considering null-terminated strings when
deciding container functions...
I don't know. When working on an abstraction I find it very, very useful
to anchor it in concrete incarnations that I know of. (Such an approach
has led to taming the gnarly UTF-8 strings into nice bidirectional
ranges.) I'm not crazy about null-terminated strings, but slists are
also sentinel terminated, they just aren't contiguous. Comparing and
contrasting these and other concrete instantiations is great exercise
that only makes the abstraction better.
e) Any other cases?
On a sorted AA, slicing using any two keys are possible (as long as
the keys exist in the AA).
Great.
Andrei
