<kodo[m]>
Coming from ruby world I'm kinda confused on when I should be using channels.
<kodo[m]>
If I want concurrency it seems like I would just spawn another fiber
<kodo[m]>
I guess channels are the way to share information between fibers?
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<Papierkorb>
kodo[m]: Yep
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<FromGitter>
<Zhomart> Hi, in the end I decided to use `Slice` to store huge data. Apparently under the hood it just uses `Pointer` to store data. Initially I feared that whole data will be stored in stack.
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<sardaukar>
basically, I want to pass in N arguments and return a slice with a constant as the first element, and the rest of the args passed in the slice
<sardaukar>
that's better, but I was hoping of a more magical way of using the splat on the Slice's initializer :D
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<crystal-gh>
[crystal] Sija opened pull request #4163: Print sigfaults and exceptions to STDERR (master...print-sigfault-to-stderr) https://git.io/vydnG
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<RX14>
I think i'll just manage shards versions completely independantly of crystal versions in crane
<RX14>
and probably not *really* support older versions of crystal
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<RX14>
well Papierkorb it looks like git's going to try and be ready to change hashes at least
<FromGitter>
<schoening> When I read through the 2017 goals it says you want crystal to be usable to create cross platform desktop apps. No love for smartphone devs? :worried:
<FromGitter>
<KCreate> I remember someone from the core team publishing (experimental) support for android
<RX14>
well i'm pretty sure iOS is off the table
<RX14>
but android is being worked on
<FromGitter>
<KCreate> It was @ysbaddaden if i recall correctly
<RX14>
yup
<FromGitter>
<KCreate> why would iOS be off the table?
<Papierkorb>
Found a bug in String's unicode processing. At least #insert(Int32, Char) (or more?) break on unicode Chars
<Papierkorb>
`line = ""; char = 'ä'; line = line.insert(0, 'ä'); pp line.ascii_only?` should give "false", but is actually "true". If you try "ä".ascii_only? the result is as expected
<FromGitter>
<schoening> Isn't swift llvm too? What would stop crystal to work on ios?
<Papierkorb>
apples blessing?
<RX14>
i'm sure it's against their TOS somewhere
<FromGitter>
<KCreate> doesn't xcode just upload the unoptimized llvm bytecode?
<FromGitter>
<KCreate> so there shouldn't be a problem with that i guess
<RX14>
still would need to get rid of the GC
<Papierkorb>
but can you deploy it to their market?
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<FromGitter>
<dreyks> you can develop for ios even using ruby. why wouldn't it be possible for crystal?
<RX14>
because ruby is interpreted
<FromGitter>
<dreyks> ah maybe it is transpiled to swift then
<FromGitter>
<schoening> Hm. How does interpreted ruby get around gc RX14? o:
<RX14>
ruby's GC is precise i would think and doesn't have to scan stacks
<RX14>
libgc that we use also relies on being able to send signals to stop the world
<RX14>
which i guess isn't in the iOS api...
<FromGitter>
<schoening> Fascinating. Thx for the info. :) kinda sad tho..
<kodo[m]>
any ETA of parallelism?
<kodo[m]>
Is that a ways out still?
<kodo[m]>
ETA on*
<RX14>
it's being worked on in a branch
<RX14>
it'll be ready when it's ready
<kodo[m]>
like best guess... ballpark
<crystal-gh>
[crystal] Papierkorb opened pull request #4164: Fix String#insert not working with non-ascii Char (master...master) https://git.io/vydVY
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<FromGitter>
<drosehn> There's rubymotion, but I think that's compiled. Apple has been against interpreted languages, not compiled ones. And they want languages where they can enforce restrictions on what iOS api's can be called by apps.
<FromGitter>
<drosehn> There would still be a lot of effort to generate crystal binaries which would run on iOS, and crystal's goals for 2017 are already *very* ambitious (IMO). iOS apps could wait until 2018, I think. (and yes, I'm technically an iOS developer)
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<FromGitter>
<dreyks> yes i was talking about rubymotion
<FromGitter>
<schoening> @kodo[m] 2017 is the goal mate
<FromGitter>
<tzekid> I tried the kemal tutorial and it doesn't compile :O [ https://git.io/vydi0 ]
<FromGitter>
<schoening> The 2017 list is truly massive. ⏎ Why are they against them @drosehn? They seem fine with JIT'ed languages at least? Ejecta, Cordova etc are allowed.
<FromGitter>
<drosehn> Apple has loosened up over time, but originally they were pretty dead set against interpreted languages on iOS devices. My guess is that they were very concerned about both memory usage of each app, and overall battery life.
<FromGitter>
<drosehn> Obviously the hardware of iOS devices has improved by a massive amount over these last ten years...
<FromGitter>
<schoening> I haven't owned an iPhone myself but the hardware is great. I wish android would stop the marketing gimmick of adding more and more cores and just build fewer better ones... Javascript performance is just magnitudes better on iPhone.
<FromGitter>
<schoening> That's not really crystal related :p but js is my main language and will be until crystal goes cross platform
<FromGitter>
<dreyks> android cores are for battery, not for performance
<FromGitter>
<schoening> So 8+ cores is not a marketing gimmick like the bitwars in the 80ties?
<FromGitter>
<dreyks> as far as i know it turns off unused cores to save energy
<FromGitter>
<schoening> Well, those engineers and devs are way smarter than me so there is probably validity to it all. But it's frustrating to have some webgl stuff run at 60fps on iphone 5 and crippling 15fps on flagship android phones :/
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<Papierkorb>
schoening, the octacores are actually dual quad cores. 4x slow processors, 4x fast processors. the phone then switches between those as needed. They can't even run at the same time, as afaik, the slow and fast ones share caches
<Papierkorb>
But single-core performance is mediocre, yes
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<FromGitter>
<schoening> Thanks for the info. It's not so easy to make JS work well with multicore. ⏎ So gonna keep learning crystal and hope for the best :D
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<FromGitter>
<schoening> Anyone tried out crow to compile crystal to js? I am getting the following error: ⏎ bash: /usr/bin/crow: cannot execute binary file: Exec format error
<FromGitter>
<KCreate> What's crow?
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