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2020-11-16 01:47:48 robert___ parts (uid452915@gateway/web/irccloud.com/x-auhharawilekbpts) ()
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2020-11-16 02:15:44 <monochrom> aoei: The greatest thing about standards is there are so many to choose from!
2020-11-16 02:16:32 <dolio> I mean, it's also not true that mathematical notation is standardized.
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2020-11-16 02:17:16 <dolio> Which is probably okay, because there's a lot of bad notation out there.
2020-11-16 02:17:21 × christo quits (~chris@81.96.113.213) (Remote host closed the connection)
2020-11-16 02:17:46 <koz_> This might be slightly off-topic: how do web frameworks actually implement routing when URLs can have captures (meaning, stuff in the URL which isn't fixed, typically for use as an input into the handler)?
2020-11-16 02:18:05 <koz_> I'm interested in 'what algorithms/data structures are used to make this not-garbage', but I'm turning up nothing.
2020-11-16 02:24:05 <dsal> My mqttd SubTree type is similar, except it's always multimatch. The naive thing worked quite well.
2020-11-16 02:24:42 <koz_> dsal: Link?
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2020-11-16 02:27:31 <dsal> github.com/dustin/mqttd t SubTree
2020-11-16 02:27:41 <dsal> (sorry: driving)
2020-11-16 02:28:04 <koz_> Close enough - thanks!
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2020-11-16 02:29:14 <dsal> + and # are wildcards and I have to return everything that matches. I don't care about the topics
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2020-11-16 02:30:43 <koz_> Hmm, now I need a Monoid of the form 'None | One a | TooMany'.
2020-11-16 02:31:00 <dsal> The point is that I thought I'd need something complicated, but the easy thing worked. Then all my hand-written instances could be derived. I sat down to write difficult code that night.
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2020-11-16 02:31:16 <koz_> dsal: This is exactly what I wanted to see - thanks!
2020-11-16 02:31:23 <dsal> This was very specific to my mqtt needs
2020-11-16 02:31:31 <dsal> Ok, I was hoping it'd help
2020-11-16 02:34:31 <koz_> :t maybe mempty
2020-11-16 02:34:32 <lambdabot> Monoid b => (a -> b) -> Maybe a -> b
2020-11-16 02:34:39 <koz_> :t foldMap
2020-11-16 02:34:40 <lambdabot> (Foldable t, Monoid m) => (a -> m) -> t a -> m
2020-11-16 02:34:43 <koz_> :D
2020-11-16 02:34:55 <koz_> % :t foldMap @Maybe
2020-11-16 02:34:55 <yahb> koz_: Monoid m => (a -> m) -> Maybe a -> m
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2020-11-16 03:13:40 <kushNYC> Anyone else try to install cross-compiled ghc binaries in iSH for iOS? It’s a musl-based Alpine Linux environment. I get fairly far with installing the i386-musl build from https://github.com/redneb/ghc-alt-libc/releases - but ultimately come up against an error during install of ghc-pkg that eludes me...
2020-11-16 03:13:45 <kushNYC> ```Installing library in /opt/ghc/lib/ghc-8.10.2/ghc-8.10.2"/opt/ghc/lib/ghc-8.10.2/bin/ghc-pkg" --force --global-package-db "/opt/ghc/lib/ghc-8.10.2/package.conf.d" update rts/dist/package.conf.installghc-pkg: Couldn't open database /opt/ghc/lib/ghc-8.10.2/package.conf.d for modification: {handle:
2020-11-16 03:13:45 <kushNYC> /opt/ghc/lib/ghc-8.10.2/package.conf.d/package.cache.lock}: hLock: invalid argument (Invalid argument)make[1]: *** [ghc.mk:973: install_packages] Error 1make: *** [Makefile:51: install] Error 2```
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2020-11-16 03:14:40 <kushNYC> Tried messing with permissions and running ghc-pkg recache to no avail
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