crystal-lang/crystal

The Crystal programming language | http://crystal-lang.org | Fund Crystal's development: http://is.gd/X7PRtI | Docs: http://crystal-lang.org/docs/ | API: http://crystal-lang.org/api/

Zafar Ansari

@ansarizafar

I have read guide/api documentation. I have initiated the calls like this WebWare::Log.new without assigning it to a variable as mentioned in the guide https://crystal-lang.org/docs/syntax_and_semantics/modules.html my question is how can I access methods from a different file

Ghost

@ghost~55586c4815522ed4b3e08557

you just need the module in a separate file, not the last line. In another file, require the file with the module (see https://crystal-lang.org/docs/syntax_and_semantics/requiring_files.html), then you can instantiate your class (save the instance to a variable) and use its methods.

Zafar Ansari

@ansarizafar

Another related question is how can I create singleton object . I don't want to initiate Log class in every file.

Ghost

@ghost~55586c4815522ed4b3e08557

2 ways (maybe more, I don't know): with a constant (intialized before everything), with a class method (initialized on first demand). example: https://carc.in/#/r/2rv5

Zafar Ansari

@ansarizafar

class variable did the job me.

Bar Hofesh

@bararchy

So, i opened a channel for supporting crystal-fann if anyone needs it: https://gitter.im/crystal-fann/Lobby

Serdar Dogruyol - Sedo セド

@sdogruyol

Morning everyone

@bararchy great job with crystal-fann :+1:

From IRC (bridge bot)

@FromIRC

<Groogy> Morning!

unreadable

@unreadable

morning all, just found this awesome git rank

https://github.com/showcases/programming-languages

seems that apple beat microsoft x)

Serdar Dogruyol - Sedo セド

@sdogruyol

lol

Crystal beats Scala there

it should be taken with a grain of salt :P

Faustino Aguilar

@faustinoaq

Yeah, scala is a great language, crystal still needs a lot of work to have a community like scala.

They even have a scalacenter with a scala "stairs" :smile:

https://www.youtube.com/watch?v=Bh5mWHQgpkg

Maybe one day we can have a "crystal monument" for developers

https://media-cdn.tripadvisor.com/media/photo-s/0e/ab/14/67/spinoza.jpg [0]

[0] - Spinoza Monument

Serdar Dogruyol - Sedo セド

@sdogruyol

lol

unreadable

@unreadable

apple, google and microsoft on first 3 places, what a surprise :) ..Sometimes I wonder how popular these languages would be without google's/ apple's back

nice scala stairs

From IRC (bridge bot)

@FromIRC

<Groogy> when a macro for logging accidentally allocates memory for strings and it just kills our performance and it took way too long to find that out <_<

ziprandom

@ziprandom

hey @sdogruyol is there a way to have kemal auto re[compile/start] while developing?

unreadable

@unreadable

@ziprandom check it out

https://github.com/samueleaton/sentry

ziprandom

@ziprandom

@krypton97 tried it, it doesn't work. can't compile in release mode. in dev mode the binary does nothing. not even shoe --help output :/

José Rodrigues

@joselfr

@ziprandom What do you mean by the binary does nothing even when you compile directly with crystal?

Zafar Ansari

@ansarizafar

Beginner Question: Is there any global exception handler in Crystal?

From IRC (bridge bot)

@FromIRC

<Yxhuvud> not be default, but you can always wrap whatever you are writing with begin .. rescue .. end. I'd advise strongly to not do that though.

oliviermo75

@zyriuse75

@krypton97 thank for the link man :+1:

From IRC (bridge bot)

@FromIRC

<ShalokShalom> Papierkorb: You said your bindings are ready for Tier 1 KDE?

unreadable

@unreadable

np m8 ;)

@ziprandom try to submit an issue, haven't used it so far

imonmyown

@imonmyown

Hi all :)

What are the generally accepted marshalling tools, or if none are available what is the preferred way to store application settings locally?

Ghost

@ghost~55586c4815522ed4b3e08557

you can use JSON or YAML

be sure to check the docs https://crystal-lang.org/api/0.23.1/JSON.html#mapping(properties,strict=false)-macro & https://crystal-lang.org/api/0.23.1/YAML.html#mapping(properties,strict=false)-macro

imonmyown

@imonmyown

Thanks @bew

imonmyown

@imonmyown

What would be the right mapping for a single YAML array?

class Foo
  YAML.mapping([] of Integer)
end

Doesn't cut it apparently... :(

Do I have to put it behind a key?

Ghost

@ghost~55586c4815522ed4b3e08557

yes

or use

Array(Int32).from_yaml(some_yaml) directly

imonmyown

@imonmyown

Great, thanks

Faustino Aguilar

@faustinoaq

Official API search needs some work, devdocs is a great tool :+1:

From IRC (bridge bot)

@FromIRC

<gcds> Hi, is there implementation of PBKDF2 on Crystal?

Faustino Aguilar

@faustinoaq

No as far I know :sweat_smile:

You can use https://crystalshards.xyz to find crystal projects.

From IRC (bridge bot)

@FromIRC

<gcds> Maybe someone could help me. I am trying to compile std lib and get problem I think on mac somehow std lib cant find libcrypto. Maybe someone has encountered this problem? pkg-config libcrypto doesnt return nothing...

<gcds> it does return sorry but still I cant build :⁠(

<gcds> i think I know the problem my openssl is to old

<gcds> too*

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