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/

Daniel Worrall

@Daniel-Worrall

This works since it is truthy when not nil

I'm unsure how this works with compile type of Bool | Nil, but I guess it would be true only in the first branch and false | nil in the second

George Dietrich

@Blacksmoke16

what do you have in the rescue portion tho?

sounds like you're just not handling the case where an exception is raised

Ali Naqvi

@naqvis

@alex-kampa For your specified use-case, i would suggest to go with JSON::Serializable and create a general class, which consumes any json string and returns Hash representation.
https://play.crystal-lang.org/#/r/bf2g

Daniel Worrall

@Daniel-Worrall

While recommendations are appreciated, the nilable hash and original has nothing to do with that. fyi

Chris Watson

@watzon

You know how in Crystal you can use a generic like T and then use T.class to say that you want the class rather than an instance of that class? Any idea how to accomplish the same in Typescript?

Gabor Szabo

@szabgab

I have been lurking here for a while, but I guess I should say hi, before I start asking questions. I have been learning Crystal in the last couple of weeks. I started to create a web site collecting data about shards, but then straight-shoota pointed at his shardbox an already existing (and much better looking) system. We then had a live coding session in which he explained about the shardbox and then we even created a small change. Anyway, I keep learning Crystal and I guess I'll ask some questions here. I hope it is ok even though they will be probably very basic.

George Dietrich

@Blacksmoke16

Chris Watson

@watzon

Welcome @szabgab

Benjamin Clos

@ondreian

is everyone just using minimal Travis image these days since the language: crystal doesn't work?

George Dietrich

@Blacksmoke16

pretty no one is using travis anymore and just switched to GH Actions

From IRC (bridge bot)

@FromIRC

<jhass> or whatever else, just stopped using travis. They got bought out and basically none of the original open source folks is there anymore

Benjamin Clos

@ondreian

I see. crystal init still generates a .travis.yml file

George Dietrich

@Blacksmoke16

it wont starting next release

Benjamin Clos

@ondreian

cool deal, it had been awhile since I needed to init a new project but was kind of :corn: fused about what was going on. Thanks.

Gabor Szabo

@szabgab

@ondreian , there is this nice form that helps generating a minimal config file for GitHub Actions: https://crystal-lang.github.io/install-crystal/configurator.html

From IRC (bridge bot)

@FromIRC

<straight-shoota> Great to have you here, szabgab =)

Rishav Sharan

@rishavs

Has anyone here used google sign in for their sites? Would you know what "data-nonce" is?
Is it the secret string that we need to match with the google response to make sure it is our own request?

Gabor Szabo

@szabgab

When I run "crystal spec" is there a way to tell it to stop on the first error?

From IRC (bridge bot)

@FromIRC

<straight-shoota> @szabgab Yes --fail-fast

<straight-shoota> In 1.1 this will actually be in the output of crystal spec --help. Because it's a runtime option, you currently only get the help by building and runnning the spec (crystal spec -- --help)

From IRC (bridge bot)

@FromIRC

<hightower2> Are there some articles on multitenant http-based apps with Crystal?

Gabor Szabo

@szabgab

@straight-shoota thanks

Gabor Szabo

@szabgab

Is there a web site collecting videos about Crystal? Similar (or not) to https://pyvideo.org/ ?

George Dietrich

@Blacksmoke16

i doubt it

Taupiqueur

@alexherbo2

is there an equivalent to File.fnmatch from Ruby?

I want to test a glob string matches a file

oprypin

@oprypin:matrix.org

[m]

@alexherbo2: https://crystal-lang.org/api/1.0.0/File.html#match?(pattern:String,path:Path%7CString)-class-method

Taupiqueur

@alexherbo2

thanks o/

George Dietrich

@Blacksmoke16

is there a way to call a parent classes implementation of a method from a different method and when that parent method is also redefined in the child?

i.e. cant just do self.parent_method and super wont work because its not the same method

maybe ::parent_method would do it?

George Dietrich

@Blacksmoke16

nope

super.parent_method doesnt work either

George Dietrich

@Blacksmoke16

https://play.crystal-lang.org/#/r/bfrz some example code

Jonathan Silverman

@mixflame

I have a problem with a bridge bot i'm trying to add SSL to

```

one sec

https://gist.github.com/mixflame/542d120744372f12c21a158c1467d9ea

```

Unhandled exception in spawn: Closed stream (IO::Error)
  from /home/jonathan/.asdf/installs/crystal/1.0.0/share/crystal/src/io.cr:118:5 in 'check_open'
  from /home/jonathan/.asdf/installs/crystal/1.0.0/share/crystal/src/io/buffered.cr:100:5 in 'peek'
  from /home/jonathan/.asdf/installs/crystal/1.0.0/share/crystal/src/io.cr:622:37 in 'gets'
  from /home/jonathan/.asdf/installs/crystal/1.0.0/share/crystal/src/io.cr:595:5 in 'gets'
  from /home/jonathan/.asdf/installs/crystal/1.0.0/share/crystal/src/io.cr:565:5 in 'gets'
  from /home/jonathan/.asdf/installs/crystal/1.0.0/share/crystal/src/io.cr:564:3 in 'gets'
  from src/lib/irc.cr:160:5 in 'get_response'
  from src/lib/irc.cr:33:9 in 'initialize'
  from src/lib/irc.cr:22:3 in 'new'
  from config/application.cr:83:3 in '->'
  from /home/jonathan/.asdf/installs/crystal/1.0.0/share/crystal/src/primitives.cr:255:3 in 'run'
  from /home/jonathan/.asdf/installs/crystal/1.0.0/share/crystal/src/fiber.cr:92:34 in '->'
  from ???

any ideas would be appreciated

George Dietrich

@Blacksmoke16

looks like you're trying to read from a closed IO

Jonathan Silverman

@mixflame

before, it was nil errors

alright, i got it to connect, now im just back to the refusal to send bug

https://gist.github.com/mixflame/4e81d9083a02c9859ccc59c623b4d3c9

Jonathan Silverman

@mixflame

ERROR :Closing link: (97KAAAAEC@c-107-2-145-228.hsd1.co.comcast.net) [Registration timeout]

something to do with flush()?

George Dietrich

@Blacksmoke16

https://gist.github.com/mixflame/4e81d9083a02c9859ccc59c623b4d3c9#file-irc-cr-L79 is prob closing the socket so that when the other fibers execute it's closed

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