| --- Log opened Fri Sep 28 00:00:53 2018 |
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| 00:46 | <&McMartin> | jerith: Do Elixir or Erlang have a syntax like Haskell/ML do for binding a variable name to something you also are destructuring? |
| 00:47 | <&McMartin> | l@[h|t]-ish, but not that since apparently @ is a valid character in identifiers |
| 00:48 | <&McMartin> | (You can work around it with a separate Match operation, but...) |
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| 00:51 | <&McMartin> | s/Match/Case/ |
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| 03:38 | <&Derakon> | McM: what do you mean by destructuring? |
| 03:39 | <&Derakon> | Is this like Python's "assign a new symbol for each element in a tuple" thing? foo, bar = (1, 2) |
| 03:41 | <&McMartin> | Yes but for arbitrary nesting and also lists, maps, and user-defined object types |
| 03:42 | <&Derakon> | How does it work for a map? |
| 03:42 | <&McMartin> | Also "did this even work" is usually part of a conditional |
| 03:42 | <&McMartin> | if map = { x: "foo", y: Z } then { .... } |
| 03:43 | <&Derakon> | That sounds kind of like Go, which has constructs like fooInt, ok := bar.(int); if !ok {whoops, bar isn't an int} |
| 03:43 | <&Derakon> | Aha. |
| 03:43 | <&McMartin> | And yes, like a great many things this is something Go implemented as if they heard about it once in a bar 15 years ago and then never really understood what it was for |
| 03:43 | <&Derakon> | Heh. |
| 03:44 | <&McMartin> | It's the core control-flow-and-binding mechanism in ML- and Haskell-like languages, and Rust borrows strongly (and Swift weakly) from that. |
| 03:44 | <&McMartin> | Clojure does it too IIRC but I forget how hard |
| 03:44 | <&McMartin> | Erlang, it turns out, does it but lacks a lot of syntactic conveniences, including (apparently) the one I want |
| 03:44 | <&Derakon> | How much does Clojure use closures~? |
| 03:45 | <&McMartin> | A fair amount, but the stuff I experimented with it less than one might think. |
| 03:45 | <&Derakon> | I should probably try out more languages, but TBH usually when I program it's because I want to get shit done, and it's rare that a language I already know isn't well-suited to what I want to do. |
| 03:45 | <&McMartin> | Python turns out to be particularly insidious about that. |
| 03:45 | <&Derakon> | Eyep. |
| 03:45 | <&Derakon> | As long as you don't want type safety. |
| 03:46 | <&Derakon> | Or true concurrency. |
| 03:46 | <&McMartin> | Erlang's extreme lack of syntactic conveniences comes from being invented by former prolog guys I think |
| 03:46 | <&McMartin> | (The actual language semantics are *much* more ML-y at the core, though I have yet to delve into the Extremely Reliable Concurrent/Distributed Processes stuff) |
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| 06:22 | <@macdjord> | Because of /course/ someone did: https://www.equestriadaily.com/2012/10/editorial-fim-pony-programming-language.html |
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| 07:16 | <&jeroud> | McMartin: Yes, you just put sub-matches in the match. |
| 07:17 | <&jeroud> | {:ok, foo = {:a, bar}} = result |
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| 07:18 | <&jeroud> | (That's Elixir syntax, because it's what I'm more familiar with and I don't have my computer handy right now.) |
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| 13:07 | < [R]> | <][_R_][> Indentation is truely best done by the roll of a die |
| 13:07 | < [R]> | <kindling> I changed the indentation to highlight the probably problematic parts ;-) [without adding any comments] |
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| 23:34 | | * abudhabi glares balefully at blinking text in browser tab title. |
| 23:56 | <@abudhabi> | I'm gonna go to sleep now, but... how does one set up a reverse DNS record? |
| --- Log closed Sat Sep 29 00:00:54 2018 |