8 Commits

Author	SHA1	Message	Date
stefan-hoeck	124afd89b1	moved transformer impls to their own directory	2021-01-19 11:53:23 +01:00
stefan-hoeck	b926e13b96	new transformer layout	2021-01-19 11:45:54 +01:00
Edwin Brady	6df2955a72	Merge pull request #909 from stefan-hoeck/maybeT ... added MaybeT monad transformer to base	2021-01-16 15:43:14 +00:00
stefan-hoeck	7b73072554	fixed bug in Foldable of EitherT	2021-01-13 13:21:20 +01:00
stefan-hoeck	31f50a793c	added prelude function 'on'	2021-01-11 05:26:17 +01:00
Edwin Brady	ad632d825d	Remove linearity subtyping ... It's disappointing to have to do this, but I think necessary because various issue reports have shown it to be unsound (at least as far as inference goes) and, at the very least, confusing. This patch brings us back to the basic rules of QTT. On the one hand, this makes the 1 multiplicity less useful, because it means we can't flag arguments as being used exactly once which would be useful for optimisation purposes as well as precision in the type. On the other hand, it removes some complexity (and a hack) from unification, and has the advantage of being correct! Also, I still consider the 1 multiplicity an experiment. We can still do interesting things like protocol state tracking, which is my primary motivation at least. Ideally, if the 1 multiplicity is going to be more generall useful, we'll need some kind of way of doing multiplicity polymorphism in the future. I don't think subtyping is the way (I've pretty much always come to regret adding some form of subtyping). Fixes #73 (and maybe some others).	2020-12-27 19:58:35 +00:00
Dong Tsing-hsuen	88aa55e875	[ new ] null method in Foldable (#832) ... Co-authored-by: Guillaume ALLAIS <guillaume.allais@ens-lyon.org>	2020-12-10 18:04:23 +00:00
MarcelineVQ	209de36ba0	add EitherT transformer (#590) ... Co-authored-by: Guillaume ALLAIS <guillaume.allais@ens-lyon.org>	2020-08-25 11:14:09 +01:00