`openarray` as a concept was raised here: [https://github.com/nim-lang/Nim/issues/6528](https://github.com/nim-lang/Nim/issues/6528) but in light of the discussion for memRanges/slices/pointer+len/span that happened here:
> * > [https://github.com/nim-lang/Nim/issues/7337#issuecomment-373641158](https://github.com/nim-lang/Nim/issues/7337#issuecomment-373641158) > * > [https://github.com/nim-lang/Nim/issues/5753](https://github.com/nim-lang/Nim/issues/5753) > * > [https://github.com/nim-lang/Nim/pull/5957](https://github.com/nim-lang/Nim/pull/5957) > * > [https://github.com/nim-lang/Nim/issues/5437](https://github.com/nim-lang/Nim/issues/5437) > I'd rather have openarray be renamed span (slice and range are taken) and be able to cover (borrow) anything from arrays/seq to slices to pointer+len **without copy**. Furthermore an `Iterable` concept can be introduced (which would work with openarray and user-defined types). `items` and `pairs` can work on this `Iterable` concept. Similarly, an `Indexable` can be added for `[]` and co. Those concepts can be added to sugar.nim.
