On 13.05.2017 16:17, H. S. Teoh via Digitalmars-d wrote:
On Sat, May 13, 2017 at 01:21:12PM +0000, Fool via Digitalmars-d wrote:
On Saturday, 13 May 2017 at 12:53:33 UTC, Nicholas Wilson wrote:
[...]
3) you can do that already. w.r.t sort you pass a predicate
(defaulting to "less") for which ordering is assumed to exist, if it
doesn't then you get a partition according to that predicate.
Another misunderstanding. Currently, there is no means to express that
'less' models a partial order vs. a linear order.
Wrong. Andrei specifically stated before that opCmp may model a partial
order, i.e., returning 0 may indicate "not comparable" rather than
"equal". And this is why opEquals is necessary: to distinguish between
"not comparable" and "equal".
T
I can't seem to find the post you are referring to but IIRC it was
immediately destroyed completely.
