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/

George Dietrich

@Blacksmoke16

oh i have an idea

have a debug.cr file that you put this stuff in

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@FromIRC

<mfiano> Does it matter that it's before the main entry point's "require"s?

George Dietrich

@Blacksmoke16

then you can add a {% skip_file if flag?(:release) %} so that the code isn't processed in release mode

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@FromIRC

<mfiano> Oh hmm...and where would that macro form go?

George Dietrich

@Blacksmoke16

first line of debug.cr

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@FromIRC

<mfiano> Aha!

George Dietrich

@Blacksmoke16

https://crystal-lang.org/api/master/Crystal/Macros.html#skip_file:Nop-instance-method

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@FromIRC

<mfiano> I like that better. It probably means I have to explicitly require debug.cr before other requires for this to work properly, rather than an arbitrary *...or I could be wrong

George Dietrich

@Blacksmoke16

i would advise against using like require "./**"

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@FromIRC

<mfiano> Yeah I would too

<mfiano> Though I must be doing something wrong here.

<mfiano> https://gist.github.com/fc1cd170def70e6ca81b3cbfab61b3ad

<mfiano> i did shards install, but get undefined constant Debug

George Dietrich

@Blacksmoke16

oh well you need to require the lib

require "debug" or whatever it's called

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@FromIRC

<mfiano> Yeah I suppose that would help a tiny bit

<mfiano> Well there may be a problem with my crystalline setup or something

George Dietrich

@Blacksmoke16

i never used it so :shrug:

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@FromIRC

<mfiano> I get editor error, saying it can't find file 'debug' on the line with require "debug", however, 'crystal run' works fine

George Dietrich

@Blacksmoke16

wonder if its conflicting with that file you just made

oh, or maybe it just doesnt know how to resolve deps like that? i never used it so ill defer to someone else

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@FromIRC

<mfiano> That's out of the require path, in src. without a relative path it should only be looking in the stdlib or "lib"

<mfiano> so hmm

<mfiano> Ha you're right

George Dietrich

@Blacksmoke16

:ok_hand:

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@FromIRC

<mfiano> src/debug.cr https://gist.github.com/mfiano/94a4835e006d3720a138a249ac870ece

<mfiano> and shards install makes a lib/debug/...

<mfiano> Renaming the above gist to debug2.cr and it works

<mfiano> how odd

<mfiano> I just have to keep in mind that I shouldn't have local files with the same name as 3rd party library directories or something

George Dietrich

@Blacksmoke16

pretty much yea

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@FromIRC

<mfiano> nah that actually works fine. it seems to be a bug in that the errors in nvim's LSP are cached and not properly invalidated, even across restarts...

Jason Waldrip

@jwaldrip

Why would @type.subclasses return an empty list?

require "json"
require "yaml"

module Pyrite::Kubernetes
  abstract class Spec
    include ::JSON::Serializable
    include ::YAML::Serializable

    macro def_parser
      macro finalized
        {% if @type.abstract? %}
          {% puts @type.subclasses %}
          def self.new(pull : JSON::PullParser)
            location = pull.location

            {% begin %}
              string = pull.read_raw
              {% for subtype in @type.subclasses %}
                begin
                  return {{type}}.from_json(string)
                rescue JSON::ParseException
                  # Ignore
                end
              {% end %}
              raise JSON::ParseException.new("Couldn't parse #{self} from #{string}", *location)
            {% end %}
          end
        {% end %}
      end
    end

    macro inherited
      def_parser
    end

    def_parser
  end
end

is there a point in compilation where I have access to the subclasses?

George Dietrich

@Blacksmoke16

Try adding a \

\{% puts @type.subclasses %}

Jason Waldrip

@jwaldrip

there we go

George Dietrich

@Blacksmoke16

https://crystal-lang.org/reference/syntax_and_semantics/macros/index.html#verbatim

Jason Waldrip

@jwaldrip

ya, i am very familiar... just been awile

too much time in elixir lately

❯ psykube status --cluster dev
NAME                    STATUS     RESTARTS    AGE
api-665c77fbb9-2dlk9    Running    0           23h2m
api-665c77fbb9-nwmx8    Running    0           23h1m
api-665c77fbb9-rjp6k    Running    0           23h1m

there we go

Jason Waldrip

@jwaldrip

Are there good examples of how the with syntax works with blocks

the docs are pretty bare on it

George Dietrich

@Blacksmoke16

def foo(&)
  with -1 yield
end

foo do
  puts abs # => 1
end

which is similar to

def foo(&)
  yield -1
end

foo do |v|
  puts v.abs
end

Jason Waldrip

@jwaldrip

Whats the ETA on 1.1.0 docker containers?

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