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2021-03-16 03:19:46 tanner__ joins (uid491848@gateway/web/irccloud.com/x-rtafqkufgdjftxay)
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2021-03-16 03:20:03 <siraben> I think the Storable instance for it results in a null-terminated string
2021-03-16 03:20:10 <siraben> Storable is used when converting it to a CStr
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2021-03-16 03:20:31 <siraben> but null-termination may just be an implementation detail
2021-03-16 03:21:33 <solidus-river> I'm sending these over the wire to a c++ client and zmq doesn't try to be smart about messages
2021-03-16 03:22:11 <solidus-river> but i'll find out when the other side blows up or not :D
2021-03-16 03:22:27 <siraben> Ah if the library abstracts it away it should be fine
2021-03-16 03:22:29 <siraben> (I guess)
2021-03-16 03:25:40 <qih> All this compiling just so I can run a simple Github Pages site using Hakyll, should have just used the Github UI >8-/
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2021-03-16 03:40:26 <koz> solidus-river: If you need C strings, there's specific stuff for that.
2021-03-16 03:40:33 <koz> (look up Haskell FFI, there's a few guides)
2021-03-16 03:40:45 <koz> ByteString _in itself_ isn't what you need there.
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2021-03-16 04:21:21 <charukiewicz> qih: If you're using stack, the good news is that you only need to do a big compilation once in a while, either when you clear your ~/.stack directory or bump the version of the Stackage LTS your project depends on.
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2021-03-16 04:24:36 <koz> charukiewicz: The same is true of recent Cabals, which cache _more_ aggressively than Stack can sometimes.
2021-03-16 04:25:13 <koz> (well, cabal-installs I should say, to be clear)
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2021-03-16 04:31:02 <charukiewicz> koz: True, and that's a good feature of the newer versions of cabal. Though since dependencies aren't pinned system or project level stackage snapshot, I think you're a bit more likely to see compilations if you don't pin dependencies the same way in every project. Stackage simplifies this a bit, especially for a first timer.
2021-03-16 04:31:32 <koz> charukiewicz: Yeah, but you should be pinning properly anyway, especially if you're writing a library.
2021-03-16 04:31:45 <koz> I don't think relying on a resolver to magically fix this issue is a good idea.
2021-03-16 04:32:16 <charukiewicz> Indeed for a library, but qih is just using Hakyll, where again, for a beginner, I recommend just letting the resolver take over
2021-03-16 04:33:34 <koz> Even then, learning to pin properly is a good practice, and not even that hard. In fact, _not_ learning this sooner is a disservice to a beginner, not a help IMHO.
2021-03-16 04:34:19 koz is now known as koz_
2021-03-16 04:34:35 <koz_> Huh, didn't even notice my nick change, argh.
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2021-03-16 04:37:20 <charukiewicz> If you're using a pinned stackage LTS or nixpkgs commit, I don't really see a benefit of specifying tight version bounds in your cabal file (referring to applications, not libraries here). You're implicitly already pinning a particular version of every one of your dependencies through whatever snapshot/commit hash you pick.
2021-03-16 04:38:00 <koz_> Why drag in all the additional hassle of Stack when you can just use pins to do the exact same thing? It means learning _its_ undocumented messes as well as Cabal's.
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2021-03-16 04:38:25 <koz_> Literally, in my view, Stack adds nothing anymore to anything other than a false sense of convenience and a tonne of undocumented annoyances.
2021-03-16 04:38:37 <koz_> However, that is my view and I think I've documented it adequately, so I'll stop.
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2021-03-16 04:40:40 <curiousgay> I thought stack is a modern replacement to cabal-install
2021-03-16 04:40:53 <koz_> curiousgay: Lol. That's not really accurate in any sense.
2021-03-16 04:41:09 DTZUZU joins (~DTZUZO@205.ip-149-56-132.net)
2021-03-16 04:43:08 <charukiewicz> curiousgay: It's true that if you're using stack on a project, it's true that you probably don't need to use the cabal cli tool. That being said, it's not really a replacement. It layers additional machinery on top of cabal and tries to offer a better UX. Generally I think it is a better UX, despite not being my build tool of choice.
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2021-03-16 04:43:34 jamm_ joins (~jamm@unaffiliated/jamm)
2021-03-16 04:43:48 <koz_> I think it has a few nice UX things - it's test output _is_ nicer by default, for example.
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2021-03-16 04:44:04 <koz_> (you can get the same with cabal-install, just that the flag you need to pass is not memorable)
2021-03-16 04:44:32 <koz_> (and I keep having to look it up every time)
2021-03-16 04:44:35 <charukiewicz> I've found that no matter what tool you're using, you probably want to save off your build/repl/test commands in a Makefile
2021-03-16 04:45:07 <koz_> charukiewicz: The original 'build system' rofl.
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2021-03-16 04:47:11 <curiousgay> koz_: that sounds like stack deliberately fragments community by not providing a tool that runs cabal-install behind the scenes, but instead creates its own ecosystem
2021-03-16 04:47:25 <koz_> curiousgay: Some people would make this argument.
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2021-03-16 04:59:11 <bobweb> Hi. Please tell me how to code a Gen String that only returns strings composed of English letters (case insensitive). My basic approach is: stringGen :: Gen [Char]; stringGen = suchThat arbitrary (elem (['a'..'z'] ++ ['A'..'Z'])). Thanks.
2021-03-16 04:59:49 <koz_> suchThat arbitrary will run quite slowly.
2021-03-16 05:01:00 <bobweb> @koz Just working through a text trying to learn the basics right now...
2021-03-16 05:01:00 <lambdabot> Maybe you meant: yow do
2021-03-16 05:01:33 <koz_> You probably want something like 'liftArbitrary (elem (['a' .. 'z'] <> [
2021-03-16 05:01:37 <bobweb> @koz what to you recommend?
2021-03-16 05:01:37 <lambdabot> Maybe you meant: yow do
2021-03-16 05:01:38 cobreadmonster joins (499efd7f@haskell/developer/breadmonster)
2021-03-16 05:01:41 <koz_> 'A' .. 'Z']))
2021-03-16 05:01:42 <koz_> '
2021-03-16 05:02:11 <koz_> Sorry about the line breaks.
2021-03-16 05:02:25 <bobweb> OK, lift is coming up in the next chapter or two.
2021-03-16 05:02:32 <bobweb> No worries.
2021-03-16 05:02:44 <koz_> It works because [] has the liftArbitrary method defined for it.

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