paddor

This is one way to build a snap for a Ruby app that:

* uses Ruby 3.3 with YJIT
* uses ZMQ/CZMQ, Sqlite3, libxml2, libmbedtls, libmysqlclient
* bundles custom fonts and wktohtmlpdf for PDF generation
* has a daemon (system service) which uses the 'network-bind' plug
* respects the env vars FOOBAR_APP (path to app) and FOOBAR_CONF (path to config file)
* has a separate, bundled web UI (unpacks webui-dist.tgz to /app/webui/dist inside the snap)
* builds the snap using an LXD container

paddor

#!/usr/bin/env ruby --yjit
WORKER_THREADS = 4
CHUNK_SIZE = 2**16

# BUG: my city struct is being corrupted when moving from the worker to the main ractor.
# `#<struct City min=-11.3, tot=24088.30000000004, max=64.6, n=1164>` becomes
# `#<struct City min=-11.3, tot=24088.30000000004, max=64.6, n=nil>`, note that each `n` attribute becomes `nil`.
# https://bugs.ruby-lang.org/issues/20165

# I tried changing the Struct to a simple array and still using `move: true`,

paddor

class Base                                                                                                                                                                │# ./lib/roadster/messaging/protocols/csp/messages.rb:6:in `<top (required)>'
  def self.property(name)                                                                                                                                                 │# ./lib/roadster/messaging/protocols/csp/csp.rb:6:in `require_relative'
    properties << name                                                                                                                                                    │# ./lib/roadster/messaging/protocols/csp/csp.rb:6:in `<top (required)>'
  end                                                                                                                                                                     │# ./lib/roadster/messaging/protocols/protocols.rb:7:in `require_relative'
                                             

paddor

Keybase proof

I hereby claim:

• I am paddor on github.
• I am paddor (https://keybase.io/paddor) on keybase.
• I have a public key ASB83G0OHrjTatUVY6r1RJrheLLmMgz6ezrSWDUhijVmiQo

To claim this, I am signing this object:

paddor

#! /usr/bin/env ruby
require "cztop"
require "benchmark"

if ARGV.size != 2
  abort <<MSG
Usage: #{$0} <message-size> <message-count>
MSG
end

paddor

from Ruby to Crystal:

* compiled to one binary
* (optional) type restrictions
* there's a class Bool (values are true and false)
* Nil is the type of nil (not NilClass)
* very DRY: def initialize(@name)
* nice way to avoid alias_method_chain: previous_def
* @@var is valid only in that class and its instances, not subclasses
* file-global functions can be called from within a method (foo() or explicitly ::foo())

paddor

require "benchmark"
require "uri"

HOSTS = {
  "fqdn"         => "example.com:3000",
  "ipv6"         => "[123::1]:3000",
  "ipv4"         => "123.123.123.123:3000",
  "mapped"       => "[::192.168.1.1]:3000",
  "garbage"      => "foo.bar:a000",
  "invalid_port" => "foo:123456",

paddor

libcallback.dylib: callback.c
	clang -dynamiclib -std=gnu99 callback.c -o $@

paddor

libcallback.dylib: callback.c
	clang -dynamiclib -std=gnu99 callback.c -o $@

paddor

libcallback.dylib: callback.h callback.c
	clang -dynamiclib -std=gnu99 callback.c -o $@