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| 2025-12-12 18:08:47 +0100 | <ski> | (so, that's a "polymorphic method" example) |
| 2025-12-12 18:08:28 +0100 | <ski> | so, in `class Eq a where (==) :: a -> a -> Bool', the `(==)' method here is *not* polymorphic, it is monomorphic in the specific `a' being an instance of `Eq' that we're talking about. otoh, in `class Functor f where fmap :: (a -> b) -> f a -> f b', the signature here *is* interpreted as `fmap :: forall a b. (a -> b) -> f a -> f b' (so polymorphic in `a' and `b', but not in `f') |
| 2025-12-12 18:05:43 +0100 | <ski> | (exceptions being method signatures in `class' (and `instance') declarations, which have the type variables in the head of the declaration free; field/component signatures in record notation for data types; also local signatures (e.g. with `where' or `let'-`in') if you have non local tyvars in scope, using `ScopedTypeVariables') |
| 2025-12-12 18:03:55 +0100 | __monty__ | (~toonn@user/toonn) (Ping timeout: 240 seconds) |
| 2025-12-12 18:03:33 +0100 | <mauke> | if it was, then [a] -> Integer would be the same as ([a] -> Int)eger |
| 2025-12-12 18:03:19 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 250 seconds) |
| 2025-12-12 18:03:18 +0100 | <ski> | Enrico63 : in *most* (but not all) circumstances, `foo :: ..a..' is interpreted as `foo :: forall a. ..a..' |
| 2025-12-12 18:03:16 +0100 | <mauke> | similarly, [a] -> Int is not the same as ([a] -> Int) |
| 2025-12-12 18:02:25 +0100 | <ski> | Enrico63 : if it was, then `Eq a => a -> ([a] -> [a]) -> [a] -> [[a]]' would be the same as `Eq a => a -> (forall a. [a] -> [a]) -> [a] -> [[a]]', which is obviously nonsense |
| 2025-12-12 18:01:07 +0100 | <ski> | Enrico63 : `[a] -> [a]' is not the same as `forall a. [a] -> [a]' |
| 2025-12-12 18:00:12 +0100 | trickard_ | trickard |
| 2025-12-12 17:58:21 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-12-12 17:53:37 +0100 | __monty__ | (~toonn@user/toonn) toonn |
| 2025-12-12 17:50:54 +0100 | <kuribas> | Yes, except for scoped type variables. |
| 2025-12-12 17:49:06 +0100 | <EvanR> | using implicit forall it seems so |
| 2025-12-12 17:49:00 +0100 | <EvanR> | is (forall a . a -> a) -> b the same as forall b . (forall a . a -> a) -> b |
| 2025-12-12 17:48:38 +0100 | <Enrico63> | ski , blinks? |
| 2025-12-12 17:48:09 +0100 | Enrico63 | (~Enrico63@host-95-251-99-143.retail.telecomitalia.it) Enrico63 |
| 2025-12-12 17:47:21 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 244 seconds) |
| 2025-12-12 17:42:33 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-12-12 17:39:33 +0100 | ski | blinks |
| 2025-12-12 17:34:26 +0100 | chexum | (~quassel@gateway/tor-sasl/chexum) chexum |
| 2025-12-12 17:31:35 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 240 seconds) |
| 2025-12-12 17:30:49 +0100 | __monty__ | (~toonn@user/toonn) (Ping timeout: 250 seconds) |
| 2025-12-12 17:27:23 +0100 | Enrico63 | (~Enrico63@host-95-251-99-143.retail.telecomitalia.it) (Quit: Client closed) |
| 2025-12-12 17:26:45 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-12-12 17:20:47 +0100 | <Enrico63> | ski, why? |
| 2025-12-12 17:16:17 +0100 | <ski> | Enrico63 : "Well, that's the same as `forall b. (forall a. a -> a) -> b`" -- no |
| 2025-12-12 17:15:36 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 252 seconds) |
| 2025-12-12 17:10:43 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-12-12 17:05:21 +0100 | kuribas | (~user@ip-188-118-57-242.reverse.destiny.be) kuribas |
| 2025-12-12 17:03:36 +0100 | pebble | (~pebble@37.63.32.91) pebble |
| 2025-12-12 17:00:46 +0100 | skum | (~skum@user/skum) skum |
| 2025-12-12 16:59:35 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 240 seconds) |
| 2025-12-12 16:55:00 +0100 | trickard_ | (~trickard@cpe-83-98-47-163.wireline.com.au) |
| 2025-12-12 16:54:56 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-12-12 16:54:47 +0100 | trickard_ | (~trickard@cpe-83-98-47-163.wireline.com.au) (Read error: Connection reset by peer) |
| 2025-12-12 16:54:04 +0100 | lucabtz | (~lucabtz@user/lucabtz) (Quit: Lost terminal) |
| 2025-12-12 16:52:07 +0100 | Enrico63 | (~Enrico63@host-95-251-99-143.retail.telecomitalia.it) Enrico63 |
| 2025-12-12 16:50:38 +0100 | deptype | (~deptype@2406:b400:3a:9d2f:c928:dba3:487d:1bc) |
| 2025-12-12 16:44:43 +0100 | fp | (~Thunderbi@2001:708:20:1406::10c5) (Ping timeout: 264 seconds) |
| 2025-12-12 16:44:25 +0100 | ouilemur | (~jgmerritt@user/ouilemur) ouilemur |
| 2025-12-12 16:43:50 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 256 seconds) |
| 2025-12-12 16:42:17 +0100 | ouilemur | (~jgmerritt@user/ouilemur) (Ping timeout: 250 seconds) |
| 2025-12-12 16:41:15 +0100 | skum | (~skum@user/skum) (Quit: WeeChat 4.8.1) |
| 2025-12-12 16:37:01 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-12-12 16:34:02 +0100 | bitdex | (~bitdex@gateway/tor-sasl/bitdex) (Quit: = "") |
| 2025-12-12 16:32:46 +0100 | trickard_ | (~trickard@cpe-83-98-47-163.wireline.com.au) |
| 2025-12-12 16:29:06 +0100 | ouilemur | (~jgmerritt@user/ouilemur) ouilemur |
| 2025-12-12 16:27:24 +0100 | ouilemur | (~jgmerritt@user/ouilemur) (Ping timeout: 260 seconds) |