Home liberachat/#haskell: Logs Calendar

Logs: liberachat/#haskell

←Prev  Next→
Page 1 .. 940 941 942 943 944 945 946 947 948 949 950 .. 18028
— 1,802,720 events total
2021-07-14 01:33:34 × nate1 quits (~nate@108-233-125-227.lightspeed.sntcca.sbcglobal.net) (Ping timeout: 272 seconds)
2021-07-14 01:34:50 × bontaq quits (~user@ool-18e47f8d.dyn.optonline.net) (Ping timeout: 272 seconds)
2021-07-14 01:35:10 ← shriekingnoise parts (~shrieking@186.137.144.80) (ERC (IRC client for Emacs 28.0.50))
2021-07-14 01:36:29 → hughjfchen joins (~hughjfche@vmi556545.contaboserver.net)
2021-07-14 01:37:23 × son0p quits (~ff@181.136.122.143) (Remote host closed the connection)
2021-07-14 01:37:38 <hololeap> geekosaur: I'm reading about the ship of Thesus, and it seems like the quintessential thought experiment in regards to what I mentioned about bionic body replacement
2021-07-14 01:38:06 <geekosaur> probably what the futurama ep was riffing on
2021-07-14 01:38:29 <hololeap> yeah probably
2021-07-14 01:38:58 → nate1 joins (~nate@108-233-125-227.lightspeed.sntcca.sbcglobal.net)
2021-07-14 01:39:44 <dexterfoo> is attoparsec still a good choice (efficient) if i don't need any backtracking?
2021-07-14 01:40:38 <hololeap> dexterfoo: I think so, but megaparsec is supposed to have similar efficiency... someone else can probably go into more detail on this
2021-07-14 01:42:25 <davean> dexterfoo: attoparsec forces copying in its buffer
2021-07-14 01:42:45 × myShoggoth quits (~myShoggot@97-120-70-214.ptld.qwest.net) (Ping timeout: 255 seconds)
2021-07-14 01:43:42 <davean> For many cases you can get faster elsewhere. I've had to add functions to attoparsec to keep acceptable performance vs. other things, but I haven't done side-by-side benchmarks with other standard offerings lately. I'd suspect attoparsec losses though - it certainly loses in many cases against naive implimentations.
2021-07-14 01:44:01 <davean> I'm moving everything off attoparsec slowly
2021-07-14 01:45:01 → renzhi joins (~xp@2607:fa49:655f:a700::8b9f)
2021-07-14 01:45:30 × jao quits (~jao@cpc103048-sgyl39-2-0-cust502.18-2.cable.virginm.net) (Ping timeout: 256 seconds)
2021-07-14 01:45:43 → stevenxl joins (~stevenlei@66.63.167.105)
2021-07-14 01:46:18 × stevenxl quits (~stevenlei@66.63.167.105) (Client Quit)
2021-07-14 01:49:03 <dexterfoo> davean: to which library?
2021-07-14 01:50:05 → stevenxl joins (uid133530@id-133530.highgate.irccloud.com)
2021-07-14 01:50:15 <davean> I didn't imply to a specific library. I just ran the parse combinators against a 'machines' stream and removed the duplication of having a parser library for most of the stuff I was doing, because my core inefficiency was due to poor buffer management in attoparsec, but "more appropriate things" I have no reason to move to one specific thing to solve all my problems.
2021-07-14 01:51:00 → myShoggoth joins (~myShoggot@97-120-70-214.ptld.qwest.net)
2021-07-14 01:51:57 × waleee quits (~waleee@2001:9b0:216:8200:d457:9189:7843:1dbd) (Ping timeout: 276 seconds)
2021-07-14 01:55:16 <hololeap> dexterfoo: I think it would be a good idea to compare it to megaparsec at the very least. also check out megaparsec's github page because there are some benchmark results on there
2021-07-14 01:56:31 → o1lo01ol1o joins (~o1lo01ol1@bl11-109-140.dsl.telepac.pt)
2021-07-14 01:57:06 <dexterfoo> ok, but i am parsing streaming data with conduit, which has a Data.Conduit.Attoparsec module, but there is no megaparsec integration
2021-07-14 01:57:09 × nate1 quits (~nate@108-233-125-227.lightspeed.sntcca.sbcglobal.net) (Ping timeout: 255 seconds)
2021-07-14 01:59:41 <davean> A) ok, great B) why would you need to to make that explicitely? C) if you just want it to be easy, use what you have at hand?
2021-07-14 02:01:26 × o1lo01ol1o quits (~o1lo01ol1@bl11-109-140.dsl.telepac.pt) (Ping timeout: 272 seconds)
2021-07-14 02:02:02 → nate1 joins (~nate@108-233-125-227.lightspeed.sntcca.sbcglobal.net)
2021-07-14 02:02:04 <dexterfoo> i am using attoparsec and it works and is easy, but i am wondering if there is a faster way
2021-07-14 02:03:37 <stevenxl> Hey folks. I have a newtype wrapper around a list of Ints, and I'd like a property test that if the list contains the number 1 in it, I get back the result `One`.
2021-07-14 02:03:42 <davean> Oh theres a definately a faster way
2021-07-14 02:03:49 <stevenxl> I wrote a quick script just to show what I mean:
2021-07-14 02:03:58 <davean> attoparsec can't be anywhere NEAR the fastest - parse theory tells us that, its the wrong structure
2021-07-14 02:04:01 <stevenxl> https://www.irccloud.com/pastebin/MPAt1waK/
2021-07-14 02:04:26 <stevenxl> Of course, the problem is that the instance of `Arbitrary` that I have created will always add one to the head of the list.
2021-07-14 02:04:47 <stevenxl> I'd like to add it at the head, the tail, or somewhere in-between randomly.
2021-07-14 02:05:02 <davean> stevenxl: filter?
2021-07-14 02:05:19 <stevenxl> davean: Sorry. I'm not following you.
2021-07-14 02:05:20 <Axman6> generate a random number between 0 and length list and insert it at that location
2021-07-14 02:05:38 <davean> stevenxl: you can make sure 1 isn't in the list easily, you can also check if 1 is in the list easily, thus you can construct both cases
2021-07-14 02:05:49 <davean> you can also randomly sort the list
2021-07-14 02:05:59 <stevenxl> Axman6: Thanks. That's what I think I need!
2021-07-14 02:06:24 <Axman6> do { list <- arbitrary; idx <- choose (0,length list); pure $ ContainsOne (insert idx 1 list) } -- you might need to write insert
2021-07-14 02:06:45 <stevenxl> Axman6: perfect.
2021-07-14 02:06:49 <Axman6> and you'll probably need to look up the correct name for choose
2021-07-14 02:07:05 <stevenxl> Yup - I can look that up in the quickcheck docs / generator section.
2021-07-14 02:09:17 → Guest43 joins (~Guest43@187.83.249.216.dyn.smithville.net)
2021-07-14 02:11:34 × thonkpod quits (~thonkpod@user/thonkpod) (Ping timeout: 256 seconds)
2021-07-14 02:17:24 × myShoggoth quits (~myShoggot@97-120-70-214.ptld.qwest.net) (Ping timeout: 255 seconds)
2021-07-14 02:17:46 → myShoggoth joins (~myShoggot@97-120-70-214.ptld.qwest.net)
2021-07-14 02:18:22 × td_ quits (~td@94.134.91.7) (Ping timeout: 256 seconds)
2021-07-14 02:19:08 → finn_elija joins (~finn_elij@user/finn-elija/x-0085643)
2021-07-14 02:19:08 FinnElija is now known as Guest2571
2021-07-14 02:19:08 × Guest2571 quits (~finn_elij@user/finn-elija/x-0085643) (Killed (sodium.libera.chat (Nickname regained by services)))
2021-07-14 02:19:08 finn_elija is now known as FinnElija
2021-07-14 02:19:49 → td_ joins (~td@muedsl-82-207-238-063.citykom.de)
2021-07-14 02:22:42 → merijn joins (~merijn@83-160-49-249.ip.xs4all.nl)
2021-07-14 02:26:14 × phma quits (phma@2001:5b0:211f:8638:196:5581:d6d8:1f7e) (Remote host closed the connection)
2021-07-14 02:26:43 → phma joins (~phma@2001:5b0:211f:8638:196:5581:d6d8:1f7e)
2021-07-14 02:34:03 × myShoggoth quits (~myShoggot@97-120-70-214.ptld.qwest.net) (Ping timeout: 255 seconds)
2021-07-14 02:36:40 → thonkpod joins (~thonkpod@user/thonkpod)
2021-07-14 02:38:56 × raehik quits (~raehik@cpc95906-rdng25-2-0-cust156.15-3.cable.virginm.net) (Ping timeout: 258 seconds)
2021-07-14 02:41:30 → shriekingnoise joins (~shrieking@186.137.144.80)
2021-07-14 02:44:37 × zebrag quits (~chris@user/zebrag) (Quit: Konversation terminated!)
2021-07-14 02:53:24 × MQ-17J quits (~MQ-17J@8.21.10.15) (Ping timeout: 255 seconds)
2021-07-14 02:57:00 × merijn quits (~merijn@83-160-49-249.ip.xs4all.nl) (Ping timeout: 255 seconds)
2021-07-14 02:57:29 → MQ-17J joins (~MQ-17J@d14-69-206-129.try.wideopenwest.com)
2021-07-14 03:01:37 → myShoggoth joins (~myShoggot@97-120-70-214.ptld.qwest.net)
2021-07-14 03:03:18 × favonia quits (~favonia@user/favonia) (Ping timeout: 255 seconds)
2021-07-14 03:08:33 × FixedPointDude quits (~FixedPoin@204.237.49.106) (Quit: Client closed)
2021-07-14 03:09:57 <dsal> stevenxl: arbitrary = notOnes >>= \a -> notOnes >>= \b -> pure $ a <> [1] <> b
2021-07-14 03:10:28 <Axman6> notOnes could just be arbitrary
2021-07-14 03:10:42 <Axman6> all that's needed is that it contains a one, not that it contains only one one
2021-07-14 03:10:55 <dsal> Where notOnes = arbitrary `suchThat` (notElem 1)
2021-07-14 03:11:00 <dsal> Oh, then yeah
2021-07-14 03:11:37 <Axman6> concat <$> sequence [arbitrary, pure [1], arbitrary]
2021-07-14 03:12:03 <dsal> Yeah. That's a good one.
2021-07-14 03:12:19 <dsal> I'm on a phone with part of my brain missing. :)
2021-07-14 03:15:55 × hughjfchen quits (~hughjfche@vmi556545.contaboserver.net) (Quit: WeeChat 2.8)
2021-07-14 03:16:08 <Axman6> It was a good team effort
2021-07-14 03:16:16 → favonia joins (~favonia@user/favonia)
2021-07-14 03:16:21 × nate1 quits (~nate@108-233-125-227.lightspeed.sntcca.sbcglobal.net) (Ping timeout: 255 seconds)
2021-07-14 03:17:54 × swistak quits (~swistak@185.21.216.141) (Ping timeout: 252 seconds)
2021-07-14 03:19:32 <stevenxl> Great team effort!
2021-07-14 03:19:35 <stevenxl> lol. Thank you all.
2021-07-14 03:21:55 × alx741 quits (~alx741@186.178.109.32) (Quit: alx741)
2021-07-14 03:21:56 → swistak joins (~swistak@185.21.216.141)
2021-07-14 03:24:49 → merijn joins (~merijn@83-160-49-249.ip.xs4all.nl)
2021-07-14 03:25:22 × derelict quits (~derelict@user/derelict) (Ping timeout: 246 seconds)
2021-07-14 03:29:51 × merijn quits (~merijn@83-160-49-249.ip.xs4all.nl) (Ping timeout: 255 seconds)
2021-07-14 03:30:24 × eggplantade quits (~Eggplanta@108-201-191-115.lightspeed.sntcca.sbcglobal.net) (Remote host closed the connection)
2021-07-14 03:30:34 → bitdex joins (~bitdex@gateway/tor-sasl/bitdex)
2021-07-14 03:33:40 → eggplantade joins (~Eggplanta@108-201-191-115.lightspeed.sntcca.sbcglobal.net)
2021-07-14 03:34:31 × geekosaur quits (~geekosaur@xmonad/geekosaur) (Remote host closed the connection)
2021-07-14 03:34:55 → geekosaur joins (~geekosaur@xmonad/geekosaur)
2021-07-14 03:35:15 × favonia quits (~favonia@user/favonia) (Ping timeout: 255 seconds)
2021-07-14 03:37:57 → favonia joins (~favonia@user/favonia)
←Prev  Next→
Page 1 .. 940 941 942 943 944 945 946 947 948 949 950 .. 18028

All times are in UTC.