ChanServ changed the topic of #crystal-lang to: The Crystal programming language | | Fund Crystal's development: | GH: | Docs: | Gitter:
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<postmodern> how do you mark a method as not-implemented in Crystal?
<FromGitter> <Blacksmoke16> depends on if you want it to not compile or raise at runtime
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<FromGitter> <> `{{ raise "not implemented" }}` or `raise "not implemented"` inside the method block
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<hightower4> Hey let's say I want to include some modules in a class, and as the end result I want myclass.some_method() to execute one common function whose parts have come from all included modules. Something like this:
<hightower4> What's the best way to design/implement this? With super, previous_def, macros, ...?
<hightower4> (The ideal implementation would be something that allows me to create an instance whose values of new/initialize arguments would come from these "partial" functions, so that I don't have to define everything with 'property!' and have non-null checks in runtime)
<jhass[m]> Composition trumps inheritance.
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<hightower4> hmm, I'll think about that, thanks
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<void09> I want to know how big is the crystal developer market.. Would it be silly to start something like a complete ecommerce solution in crystal ?
<void09> And are the average prices higher than with other more used languages, js/php/ruby
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<FromGitter> <Blacksmoke16> There's also a dedicated `NotImplementedError`
<FromGitter> <Blacksmoke16> forums would prob be your best bet
<FromGitter> <pyrsmk> I would assume that the average salary is nearly the same than for Ruby since it's quite a niche language ATM and the easier is to hire Ruby developers which are a bit expensive IMO, at least in France
<FromGitter> <RespiteSage> @void09 I don't think it's sillier to write an ecommerce solution in Crystal rather than in any other language. In Crystal, you'll get type safety, developer friendliness, and performance, but you'll lose the size of the community (including packages and tools) and number of potential devs.
<FromGitter> <RespiteSage> I'm sure there are more tradeoffs than that, but those are the main ones for me.
<FromGitter> <RespiteSage> Also, I agree that you'll be able to hire a Crystal dev at a similar salary to other, more popular languages. And the tradeoff where there are fewer Crystal devs is probably offset by the fact that I think that a much larger proportion of the community would want a job writing Crystal (and don't currently have one).
<FromGitter> <RespiteSage> Has anyone run into issues with `raise`?
<FromGitter> <RespiteSage> I'm getting a very weird arithmetic overflow error, seemingly from call stack unwinding.
<straight-shoota> are you doing anything out of the ordinary?
<FromGitter> <RespiteSage> Not that I can tell. I'm currently trying to minimize it.
<FromGitter> <RespiteSage> That is, minimize the offending code.
<FromGitter> <RespiteSage> It's happening in an `expect_raises`, but I haven't determined whether that's the culprit.
<FromGitter> <RespiteSage> ```code paste, see link``` []
<FromGitter> <RespiteSage> It works on (, but I'm getting an arithmetic overflow on my machine.
<FromGitter> <RespiteSage> Here's what I'm getting:
<FromGitter> <Blacksmoke16> try with `--no-debug`
<FromGitter> <RespiteSage> ```code paste, see link``` []
<FromGitter> <RespiteSage> Same result with `--no-debug`.
<FromGitter> <RespiteSage> Huh. Apparently it works when the exception message matches?
<FromGitter> <RespiteSage> I updated my gist.
<FromGitter> <RespiteSage> Further minimized:
<FromGitter> <RespiteSage> ```code paste, see link``` []
<FromGitter> <RespiteSage> I've updated my gist again.
<FromGitter> <Blacksmoke16> works for me on mac
<FromGitter> <Blacksmoke16> `rm -rf ~/.cache/crystal` help at all? :shrug:
<FromGitter> <RespiteSage> And the following works: ⏎ ⏎ ```code paste, see link``` []
<FromGitter> <RespiteSage> Yeah, it works on, too.
<FromGitter> <RespiteSage> Worth a try.
<FromGitter> <RespiteSage> Nope, still happening.
<FromGitter> <Blacksmoke16> :sad:
<FromGitter> <RespiteSage> Yeah. I'm at the right commit hash, right?
<FromGitter> <RespiteSage> And a supported LLVM version?
<FromGitter> <RespiteSage> Okay, so apparently the most minimized version I can make is `raise "Oops!"`...
<FromGitter> <Blacksmoke16> lol
<FromGitter> <RespiteSage> So it's just something about creating call stacks on my machine/OS/whatever?
<FromGitter> <RespiteSage> I have no clue.
<void09> RespiteSage thanks for the developer insights.. that makes sense. Although I have no idea what range to estimate I could find a good crystal dev. I never hired coders before.
<FromGitter> <Blacksmoke16> :shrug:
<FromGitter> <> yep, exits my program when I used it /troll
<FromGitter> <> There is also Libunwind under the hood
<FromGitter> <> What OS do you use specifically?
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<FromGitter> <RespiteSage> OpenSUSE Tumbleweed.
<FromGitter> <Blacksmoke16> ah, thats prob a clue
<FromGitter> <Blacksmoke16> id try against master if you can for the lols?
<FromGitter> <RespiteSage> Yeah, I'll see if I can.
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<FromGitter> <> This is a rolling release, so perhaps one library it too recent for Crystal
<FromGitter> <> you could try with to reproduce inside a container. ⏎ For example, use stable OpenSUSE.
<FromGitter> <> then, try updating libunwind only, or an other Crystal dependency, using the Tumbleweed repo.
<FromGitter> <> like a regular update from stable to Tumbleweed, just not everything at the same time
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