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<FromGitter>
<girng> I was just thinking in my benchmarks with json.parse and from_json it's important i should have called the `as_xxx` for their respective type
<FromGitter>
<girng> that would have been more fair, because with json.parse, you usually do that for comparison. when u do from_json, you already specified the types so don't need to do another as_xx or to_xx ;)
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<FromGitter>
<edwardloveall> whoever made the index.json that's creating as part of generating documentation: THANK YOU!
<FromGitter>
<edwardloveall> it's so detailed and parseable and easy to hack around with
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<FromGitter>
<girng> i just saw a topic on gamedev.net of crystal lang being used
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<FromGitter>
<proyb6> @girng Love to have the link to read the article?
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<FromGitter>
<girng> check pm
<FromGitter>
<HarrisonB> If I have an Array of varying types and I want to `select` all of the elements of type `T`, what would be the best way to tell the compiler, "hey! these are all of type `T`"
<FromGitter>
<bararchy> @girng I would also love a link, why not share here?
<FromGitter>
<HarrisonB> This is the best I came up with; let me know if this can be improved upon: ⏎ ⏎ ``` code paste, see link``` ⏎ ⏎ I had tried using `Array#select`, but that didn't tell the compiler that the elements selected were of type `T` apparently [https://gitter.im/crystal-lang/crystal?at=5bb5a909435c2a518e4bd673]
<FromGitter>
<ezrast> @HarrisonB You can also do `collection.compact_map{ |item| item if item.is_a? T }`; your way is a little more explicit though.
<FromGitter>
<HarrisonB> @ezrast thanks! that fits much better with what i'm trying to do
<FromGitter>
<ezrast> `map` methods are allowed to set the type of the Array they return because they can look at the return type of the block they are passed before instantiating the Array. The Array can't be recast after the fact because that could change how the elements are expected to be laid out in memory.
<FromGitter>
<HarrisonB> makes sense
<FromGitter>
<straight-shoota> @edwardloveall ⏎ ⏎ > whoever made the index.json that's creating as part of generating documentation: THANK YOU! ⏎ ⏎ That would be me (#4746). But the data was actually already available internally, it just needed to be serialized to JSON. [https://gitter.im/crystal-lang/crystal?at=5bb5b4c86e5a401c2d141d05]
<FromGitter>
<girng> i think api should be more simplified imo
<FromGitter>
<girng> actually, i take that back. it looks like that is just the clustering example
<FromGitter>
<girng> the first code block looks simple
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<FromGitter>
<j8r> @proyb6 the only thing more vulnerable in PHP apps vs other languages is if the attacker is on the machine, (s)he can change the application source code at runtime, without even restarting anything
<FromGitter>
<bararchy> @j8r what's "DFabric" ?
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<FromGitter>
<j8r> actually, no exactly. I need to add a `as` cast in `unix = seconds - UNIX_EPOCH.total_seconds.as(Int64)` at `src/time.cr line 1298`
<FromGitter>
<j8r> (I'm preparing a PR) This doesn't change the Time API, but IMHO adds clarity by replacing `UNIX_SECONDS = SECONDS_PER_DAY.to_i64 * (1969*365 + 1969/4 - 1969/100 + 1969/400)` to `UNIX_EPOCH = Time.utc 1970, 1, 1` ⏎ Another side effect is performance increased, in some places by 1.5x
<FromGitter>
<mehmetc> I’m trying to use gdb or lldb on a Kemal app but it looks as if some debug info is missing. Do dependencies inherit the debug flag? using Crystal 0.26.1 with LLVM 4.0.0 on linux
<FromGitter>
<j8r> hum I'll use `nanosecond`
<FromGitter>
<girng> are u sure it's not possible to limit float decimals to 2 decimal points w/o doing %.2f a string conversion?
<FromGitter>
<girng> it just feels so hacky to do a float conversion to string in my game loop lol
<FromGitter>
<girng> *%f.2* typo, my bad
<FromGitter>
<bararchy> @mehmetc Try to compile with `--debug` flag
<FromGitter>
<girng> i mean *%0.2f*, my bad
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<hightower2>
Hey folks, I have a strange problem... on 0.26.1, running 'crystal -v' works just fine as some users, while under some users it produces error 'Failed to raise an exception: END_OF_STACK'
<hightower2>
I tested this with both Debian package and a binary tgz
<hightower2>
Any ideas?
<hightower2>
The error happens even when I call crystal binary directly (avoiding that wrapper in bin/)
<hightower2>
seems to be related to crystal's inability to open tty which the terminal is using
<hightower2>
well ok, won't bother with it right now
<FromGitter>
<edwardloveall> fair enough @straight-shoota , still thank you ❤️
<FromGitter>
<mehmetc> @bararchy Will the —debug flag also compile the dependencies with debug information. A lot of stuff is “optimized out” today.
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<FromGitter>
<fusillicode_twitter> Hi guys, can I post here a question I've just asked inside the crecto channel ? 🤔
<hightower2>
fusillicode: just ask :)
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<FromGitter>
<drum445> Anybody have any tutorials on how to setup multiple crystal apps on one server using nginx?
<FromGitter>
<j8r> a crystal app won't be different from a Go, Rust or C one
<FromGitter>
<drum445> well I guess a tutorial for any of them then please, as I have a few Go and Crystal apps running but I am running the binaries for them
<FromGitter>
<drum445> Would be nice to use nginx
<FromGitter>
<j8r> If you're lazy you could also use Caddy :)
<FromGitter>
<j8r> simple configuration, on Let's Encrypt built-in
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<FromGitter>
<drum445> cool
<FromGitter>
<drum445> So how do you host multiple crystal apps on a single machine?:
<FromGitter>
<drum445> Currently I have them all on diff ports and just do ⏎ nohup ./app &
<FromGitter>
<codenoid> i use kemal, different port and supervisord
<FromGitter>
<codenoid> for session i use both kemal-session-redis and crystal-redis
<FromGitter>
<j8r> sorry to tell you @codenoid , but supervisord is a Python sh** compared to `systemd`/`openrc` :) ⏎ In fact, when you install it, supervisor has its own systemd/init.d service under the ground, which spawns you apps as subprocesses... nice (ironic)
<FromGitter>
<j8r> but if you're on macOS or windows... I may understand
<FromGitter>
<codenoid> :o
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<FromGitter>
<codenoid> yeah
<FromGitter>
<codenoid> sometime my big kemal app
<FromGitter>
<codenoid> need access trigger to keep active
<FromGitter>
<codenoid> idk, if user access 1 page, the loading time is sooo looooongggg ⏎ but when user open new page (in newtab etc), the first page and this second page is loaded
<FromGitter>
<j8r> browser cache?
<FromGitter>
<codenoid> that's make me thing to move to elixir
<FromGitter>
<codenoid> i don't think so :
<FromGitter>
<codenoid> i think it's in kemal it self @j8r
<FromGitter>
<j8r> Do you `spawn` for each requests? Is it async?
<FromGitter>
<codenoid> what
<FromGitter>
<j8r> I don't know if requests done by clients are sync or async
<FromGitter>
<codenoid> a web framework
<FromGitter>
<codenoid> different page
<FromGitter>
<j8r> Yes I know, but does kemal handle concurrent requests?
<FromGitter>
<codenoid> just 2 request at the same time
<FromGitter>
<codenoid> i need crystal code review (?)
<FromGitter>
<codenoid> *and in my local
<FromGitter>
<bararchy> @codenoid Seems strange, I'm using Kemal with 20k concurrent users at tests, no issues
<FromGitter>
<j8r> maybe you have a DB, a slow connection?
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<FromGitter>
<codenoid> i use mongo
<FromGitter>
<codenoid> at small code base
<FromGitter>
<codenoid> no, it's woring fine
<FromGitter>
<codenoid> sorry for late reply
<FromGitter>
<codenoid> working fine
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<FromGitter>
<j8r> You'll have to identify what's render the page load slow. ⏎ Switching to other technologies can also produce slow apps
<FromGitter>
<codenoid> i render html page
<FromGitter>
<codenoid> with 4 ajax access
<FromGitter>
<codenoid> and sometimes the ajax load successfully, sometimes like case 1
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<FromGitter>
<codenoid> wdyt
<FromGitter>
<codenoid> 1) i'm too lazy to get sht done
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<FromGitter>
<drum445> @codenoid what lib with mongo, I couldn't find a good one
<FromGitter>
<Thellior> Is there a way to install a subdirectory of a monorepo? ⏎ ⏎ ``` code paste, see link``` ⏎ ⏎ I have a mono repo with apps and libs folder. Now i want to install a lib logger into one of my apps. So i need to add the dependency to the shards file to install it. With ruby i can normaly specify a glob in the gemfile. Does something exist in the shards implementation or is this a missing feature. Than i
<FromGitter>
<fridgerator> @Thellior I believe someone asked this question a few days ago, and the answer was that no shards doesn't have this feature
<FromGitter>
<Thellior> @fridgerator Ok thanks for the fast response. I will check if can create the feature :)
<FromGitter>
<fridgerator> there was as short discussion about it, if you search "monorepo" in gitter Its towards the top in chis channel
<FromGitter>
<fridgerator> I'm trying to bind a c library which has relative includes: `#include "include/internal/blah/blah.h`
<FromGitter>
<Thellior> @fridgerator I see
<FromGitter>
<fridgerator> I'm adding that include path as a flag: `@[Include("/full/path/to/include/stuff/file.h", flags: "-I/full/path/to/include")]` but its still not finding the relative include
<FromGitter>
<fridgerator> fatal error file not found
<FromGitter>
<j8r> "catching a lot of flak" was like: "i'm flying, and I'm catching a lot of AA bullets" 😄
<FromGitter>
<fridgerator> haha, I'm guessing thats where the term came from
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<FromGitter>
<jwoertink> haha
<FromGitter>
<jwoertink> I have a flak jacket that is still in tact if you need it :D
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<FromGitter>
<Blacksmoke16> https://crystal-lang.org/api/0.26.1/Array.html how does the `Array` class inherit the `Reference` class methods when the class isnt setup like `Array(T) < Reference`?
<FromGitter>
<bew> I'm listening to a song named Crystal, perfect 👍
<oprypin>
Blacksmoke16, Reference is a fake class that's inherited by any `class`
<oprypin>
Blacksmoke16, Value is a fake class that's inherited by any `struct`
<FromGitter>
<Blacksmoke16> but where/how is it inherited? some macro magic somewhere?
<oprypin>
Blacksmoke16, it's an inherent part of the language, why would macros even have to be involved
<FromGitter>
<Blacksmoke16> idk thats why im asking :p
<FromGitter>
<Blacksmoke16> fair enough
<FromGitter>
<bajro17> @bew bro it is awesome thanks for share :)
<FromGitter>
<bajro17> When we can expect 0.27
<FromGitter>
<bew> Soon (tm)
<Tortice>
when it's ready
<FromGitter>
<bew> @bajro17 (i have no idea ^^)
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<FromGitter>
<drum445> Why do I still like PHP lol
<FromGitter>
<girng> damn 100+ new messages overnight, crystal's gitter is 👍 lit
<FromGitter>
<girng> @drum445 lol same here
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<FromGitter>
<girng> the only reason i use php is because of all the online tutorials out there, and when I was a kid, those helped me greatly. if i were to re-write a forum or something now, i'd prob use kemal though
<FromGitter>
<codenoid> to help crystal development ?
<FromGitter>
<fridgerator> If you make 5 PR's to open source repo on github you get a hacktoberfest tshirt. What did you have in mind to help crystal?
<FromGitter>
<codenoid> add `Hacktoberfest` to crystal repo, and let people fix crystal issue
<FromGitter>
<fridgerator> ah
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<FromGitter>
<jwoertink> ^ I like that idea
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<FromGitter>
<codenoid> the way to promote crystal too
<FromGitter>
<jwoertink> Is there a way to convert `Bytes` in to a string?
<FromGitter>
<jwoertink> like `slice.to_a.map(&.something).join` ?
<FromGitter>
<jwoertink> `slice.to_a.map(&.chr).join` I think this will work
<FromGitter>
<jwoertink> but maybe there's a better way. I was hoping `slice.to_s` would, but that method is more like inspect than "convert to a string"
<FromGitter>
<girng> i got 1 pr merged, which was editing a .css file lol
<FromGitter>
<girng> i want my shirt!
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<FromGitter>
<bew> @jwoertink the other, way around: `String.new(some_bytes)`
<FromGitter>
<bew> (oops sneaky comma^^)
<FromGitter>
<jwoertink> ah
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