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<
crystal-gh >
[crystal] marcosdsanchez opened pull request #2286: Fix BitArray#toggle documentation (master...marcosdsanchez-patch-1)
https://git.io/vaT2U
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<
crystal-gh >
[crystal] jhass closed pull request #2286: Fix BitArray#toggle documentation (master...marcosdsanchez-patch-1)
https://git.io/vaT2U
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<
crystal-gh >
[crystal] ysbaddaden closed pull request #2267: Add FileUtils#cp (master...fileutils_cp)
https://git.io/v2daY
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<
crystal-gh >
crystal/master fddb151 Ary Borenszweig: Added some type annotations on instance vars
17:06
<
crystal-gh >
crystal/master 89be6d5 Ary Borenszweig: Compiler: fixed a couple of issues with non generic module types
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<
crystal-gh >
crystal/master e6529a7 Potapov Sergey: Implement Array#first(n : Int) and Array#last(n : Int)
18:00
<
crystal-gh >
crystal/master bb65c05 Potapov Sergey: Update doc for Array#first(n) and #last(n)
18:00
<
crystal-gh >
crystal/master 6f87300 Ary Borenszweig: Merge pull request #2281 from greyblake/array-first-n...
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<
crystal-gh >
crystal/master ac46f8c Ary Borenszweig: Rename `take` to `first`. Related to #2281
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<
perks >
anyone know how to poll a websocket for incomming messages? looking at the specs I can't really seem to figure out how I would do that
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22:32
<
BlaXpirit >
perks, Crystal does not have websocket in its standard library.
22:33
<
ldlework >
for a minute I was super impressed
22:34
<
BlaXpirit >
ldlework, nothing to be impressed about. the contrary even, because websockets should not be in standard library
22:34
<
BlaXpirit >
perks, wow I'm mistake
22:35
<
BlaXpirit >
perks, instead of polling you use on_message
22:37
<
perks >
yeah I tried passing a proc literal that just printed out the string return
22:37
<
BlaXpirit >
perks, uh actually looks like you're meant to subclass it
22:38
<
BlaXpirit >
did you try that?
22:38
<
perks >
Sorry, comming from a non ruby background so some of the conventions I guess (especially with the syntax) escape me sometimes
22:39
<
BlaXpirit >
perks, hah I'm mistaken yet again
22:39
<
perks >
It looks like maybe I call the run() function after setting up on_message
22:39
<
BlaXpirit >
this is so confusing... the empty body of on_message makes me think that you need to subclass it
22:40
<
BlaXpirit >
but actually the function is not no-op
22:40
<
BlaXpirit >
calling on_message with a proc sets an instance variable
22:41
<
perks >
when you instantiate the class it creates a buffer
22:42
<
perks >
and i guess when it recieves incomming msg it call on_message on the buffer that parsed the incomming response
22:44
<
BlaXpirit >
perks, anyway, the syntax is ws.on_message do |s| puts s end
22:44
<
perks >
now just gotta figure out how to do threads(fibers?)
22:45
<
perks >
thanks BlaXpirit
22:45
<
BlaXpirit >
but I can't check it cuz i have no idea what these websockets are
22:45
<
perks >
yeah it worked!
22:46
<
BlaXpirit >
perks, and do you want to run this websocket so that it doesnt block the rest of your program?
22:46
<
perks >
yeah that was the next step
22:46
<
BlaXpirit >
spawn &ws.run
22:46
<
perks >
with a spawn do block?
22:47
<
BlaXpirit >
perks, well this &thing replaces a block
22:47
<
BlaXpirit >
spawn do ws.run end
22:47
<
BlaXpirit >
or spawn &ws.run
22:47
<
BlaXpirit >
is the same
22:47
<
perks >
that causes the program to exist
22:47
<
BlaXpirit >
perks, well yeah it's like in the background but the main "thread" ends so it exits
22:48
<
perks >
is there anyway to do I guess like Thread joining and closing?
22:48
<
BlaXpirit >
perks, I wish I could remember
22:48
<
perks >
I know my terminology is off, but maybe there are some docs on general concurrency, parallleism
22:48
<
BlaXpirit >
perks, note that everything runs in 1 thread currently
22:48
<
perks >
Ahh so more of async/event loopish type deal
22:49
<
BlaXpirit >
perks, the concurrency model is planned to be similar to Go
22:50
<
BlaXpirit >
async/await is explicit context switching, but in crystal it can happen in any function that allows context to switch
22:51
<
perks >
I guess Channels are then similar to queues in other languages
22:51
<
BlaXpirit >
perks, quite similar
22:51
<
perks >
mostly just picking up from snippets on the issues tracker haha
22:51
<
perks >
okay, thanks ill start playing around with this!
22:53
<
BlaXpirit >
and it still doesnt explain a way to wait for a fiber, and i can't find it
22:54
<
perks >
oh thats an awesome doc
22:54
<
perks >
wait is this not on the main wiki haha
22:54
<
BlaXpirit >
it's okay, just something someone write hastily
22:55
<
perks >
thanks again!
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<
BlaXpirit >
perks, well for waiting I suppose you can use a channel
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<
BlaXpirit >
just send something to it at the end of a fiber and wait for something at the other end
23:04
<
BlaXpirit >
but in this case you don't need it, the default is just fine for you. do something else in your program and the websocket will run while it runs
23:07
<
perks >
awesome, and yeah even the doc u linked me used ```loop { sleep 9001 } # Ensure the program does not exit``` to keep the thread from exiting while the fibers block
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