Re: [Ocaml-lib-devel] Indexed tree module

[Nicolas C. <war...@fr...>]

> > > I would have suggested "slice" just to be consistent with
> > > ExtString.String.slice, but since it uses the (index,len)
> > > approach instead of (first,last) and is also much stricter
> > > it might be confusing to use the same name.
> >
> > Actually, (first, last) would be easier to implement.  Is there a
> > preference in the group?
>
> First,len has the advantage that the last node must
> be in the same list. However, first,last is probably
> more useful in some circumstances -- and works even
> when the two nodes are in a distinct list.
>
> So I can't decide. I think the semantics are
> sufficiently different to provide both. First,len
> can be implement by starting at first, advancing len,
> and then calling first,last. Or even use options
>
>  ?first ?last ?len

Brian, please don't listen to him :)
Since the two are really same, I would prefer the current index, len. You
can simply add index to len if you want to get last.  Slice or splice are
both ok, sub also.

Nicolas