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2020-11-17 10:24:13 × toorevitimirp quits (~tooreviti@117.182.180.118) (Remote host closed the connection)
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2020-11-17 10:50:42 × ubert quits (~Thunderbi@2a02:8109:9880:303c:ca5b:76ff:fe29:f233) (Remote host closed the connection)
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2020-11-17 10:57:54 × da39a3ee5e6b4b0d quits (~da39a3ee5@cm-171-98-79-192.revip7.asianet.co.th) (Ping timeout: 265 seconds)
2020-11-17 10:59:30 hackage haskoin-core 0.17.2 - Bitcoin & Bitcoin Cash library for Haskell https://hackage.haskell.org/package/haskoin-core-0.17.2 (jprupp)
2020-11-17 10:59:30 × alp quits (~alp@88.126.45.36) (Ping timeout: 260 seconds)
2020-11-17 11:03:06 nut joins (~user@roc37-h01-176-170-197-243.dsl.sta.abo.bbox.fr)
2020-11-17 11:03:30 <nut> is bytestring a list of word8?
2020-11-17 11:03:43 <nut> in the bytestring package
2020-11-17 11:03:50 <merijn> nut: Define "is"
2020-11-17 11:04:56 <merijn> Conceptually? Maybe. Is it implemented as a list? Definitely not.
2020-11-17 11:04:56 <nut> well, i have a utf-8 string and i want to keep until it sees a \n
2020-11-17 11:05:24 <nut> I don't know how to represent \n in Word8
2020-11-17 11:05:25 <merijn> nut: Pretend the "String" part of ByteString doesn't exist
2020-11-17 11:05:28 <merijn> ByteString = Bytes
2020-11-17 11:05:50 <merijn> If you have unicode text, then you don't want ByteString
2020-11-17 11:06:02 alp joins (~alp@2a01:e0a:58b:4920:8024:df57:dcb5:b452)
2020-11-17 11:06:20 <nut> then I check the bytestring APIs, and I realize that conceptually a Bytestring is a list of Word8
2020-11-17 11:06:33 <nut> Which would you recommend?
2020-11-17 11:06:47 <merijn> nut: You probably want "decodeUtf8' :: ByteString -> Either UnicodeException Text" :)
2020-11-17 11:06:50 <merijn> https://hackage.haskell.org/package/text-1.2.4.0/docs/Data-Text-Encoding.html#v:decodeUtf8-39-
2020-11-17 11:07:11 <merijn> Alternatively, you can use decodeUtf8With to explicitly specify how to handle decoding errors
2020-11-17 11:07:16 Unhammerd is now known as Unhammer
2020-11-17 11:07:30 <nut> But I see there's also the Data.ByteString.Lazy.Char8
2020-11-17 11:07:56 <merijn> https://github.com/quchen/articles/blob/master/fbut.md#bytestringchar8-is-bad
2020-11-17 11:07:58 <nut> I thought that's supposed to be useful for mixed texual and binary data
2020-11-17 11:08:12 <nut> Ok let me dig in
2020-11-17 11:08:16 <merijn> nut: Char8 is a great way to silently corrupt your data! :)
2020-11-17 11:09:06 <nut> So go with the text package right?
2020-11-17 11:09:34 <merijn> nut: Text is almost always the right choice when you're, well, dealing with text :p
2020-11-17 11:10:14 × acidjnk_new quits (~acidjnk@p200300d0c719ff874cf537f47d61e6af.dip0.t-ipconnect.de) (Ping timeout: 264 seconds)
2020-11-17 11:10:21 <merijn> Plus conversion to/from String (via pack/unpack) and to/from ByteString (via Data.Text.Encoding) is easy and well-defined
2020-11-17 11:10:21 <nut> thx for the tip
2020-11-17 11:11:04 <merijn> :t Data.Text.takeWhile
2020-11-17 11:11:05 <lambdabot> (Char -> Bool) -> Data.Text.Internal.Text -> Data.Text.Internal.Text
2020-11-17 11:11:11 <merijn> :t Data.Text.takeWhile (=='\n')
2020-11-17 11:11:12 <lambdabot> Data.Text.Internal.Text -> Data.Text.Internal.Text
2020-11-17 11:11:23 <merijn> nut: That solves your problem right away ;)
2020-11-17 11:11:32 <merijn> eh
2020-11-17 11:11:41 <merijn> takeWhile (/='\n'), of course :p
2020-11-17 11:11:53 <nut> nice
2020-11-17 11:14:49 × solonarv quits (~solonarv@astrasbourg-653-1-156-155.w90-6.abo.wanadoo.fr) (Read error: Connection reset by peer)
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2020-11-17 11:26:41 × alp quits (~alp@2a01:e0a:58b:4920:8024:df57:dcb5:b452) (Ping timeout: 272 seconds)
2020-11-17 11:27:36 <zenzike> I was looking at `RandomGen` and saw that `next` is deprecated due to poor performance. That makes sense if the default naive definition is used. However, it seems that `splitmix` provides its own `nextInt` which seems fine and is used in the instance of `StdGen` (which is `SMGen`). Am I missing something obvious?
2020-11-17 11:28:25 invaser joins (~Thunderbi@31.148.23.125)
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2020-11-17 11:31:07 royal_screwup21 joins (52254809@gateway/web/cgi-irc/kiwiirc.com/ip.82.37.72.9)
2020-11-17 11:33:02 × ericsagn1 quits (~ericsagne@2405:6580:0:5100:bab2:cd00:4d2d:7b87) (Ping timeout: 264 seconds)
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2020-11-17 11:36:33 britva joins (~britva@31-10-157-156.cgn.dynamic.upc.ch)
2020-11-17 11:37:00 hackage haskoin-store-data 0.38.1 - Data for Haskoin Store https://hackage.haskell.org/package/haskoin-store-data-0.38.1 (jprupp)
2020-11-17 11:38:00 hackage haskoin-store 0.38.1 - Storage and index for Bitcoin and Bitcoin Cash https://hackage.haskell.org/package/haskoin-store-0.38.1 (jprupp)
2020-11-17 11:38:59 <dminuoso> nut: Just to show how ByteString <> String confusion can be very surprising. Do you know how ByteString has an IsString instance, such that you can use OverloadedStrings for ByteString?
2020-11-17 11:40:24 LKoen joins (~LKoen@9.253.88.92.rev.sfr.net)
2020-11-17 11:42:00 <kuribas> do you have a stragegy for versioning data?
2020-11-17 11:42:43 <kuribas> an easy way I came up with was: simply update the data type, but pass a version number to functions.
2020-11-17 11:42:57 chaosmasttter joins (~chaosmast@p200300c4a73c52013d9d8982c174fa36.dip0.t-ipconnect.de)
2020-11-17 11:43:31 <kuribas> so for sum types I could simply add clauses.
2020-11-17 11:43:33 raehik joins (~raehik@cpc95906-rdng25-2-0-cust156.15-3.cable.virginm.net)
2020-11-17 11:43:38 × Guest48480 quits (~luka@217.146.82.202) (Remote host closed the connection)
2020-11-17 11:44:03 <kuribas> then each function has a "rest clause" that raises an error: myFun _ = error "unsupported field."
2020-11-17 11:44:36 ericsagn1 joins (~ericsagne@2405:6580:0:5100:d6bc:df2c:ba38:451b)
2020-11-17 11:46:36 × tput quits (~tput@S0106a84e3fe54613.ed.shawcable.net) (Read error: Connection reset by peer)
2020-11-17 11:46:48 <kuribas> but then the burden to not break previous code is on the programmer.
2020-11-17 11:47:30 hackage microlens 0.4.12.0 - A tiny lens library with no dependencies https://hackage.haskell.org/package/microlens-0.4.12.0 (Artyom)
2020-11-17 11:48:31 hackage microlens-platform 0.4.2, microlens-ghc 0.4.13, microlens-th 0.4.3.7 (Artyom): https://qbin.io/came-wage-exrj
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