yorickpeterse

This Gist aims to get some discussion going and throw some ideas around about introducing a more universal way to configure the environment/mode of Ruby applications and libraries (where applicable).

When speaking about the environment/mode (referred to as "environment" from this point on) we're speaking about the variable/option that specifies a alternative set of configuration options to use. That is, separate database options, hostnames and so on. A basic example of this is the standard Rails database configuration file:

yorickpeterse

namespace :syntax do
  desc 'Checks the syntax of ERB files'
  task :erb do
    require 'action_view'

    Dir['app/views/**/*.erb'].each do |file|
      template = File.read(file)

      begin
        ActionView::Template::Handlers::Erubis \

yorickpeterse

with Rubinius.synchronize:

$ ./bin/benchmark core/file/bench_each_byte.rb
=== rbx ===                                                                        
File#each_byte with a small file                                                   
                           29.1 (±0.0%) i/s -        146 in   5.023101s (cycle=2)  
File#each_byte with a medium file                                                  
                            3.3 (±0.0%) i/s -         17 in   5.228034s (cycle=1)  
File#each_byte with a large file                                                   
                            0.3 (±0.0%) i/s -          2 in   6.110730s (cycle=1)  

yorickpeterse

desc: (none)
cmd: ruby rss_growth_during_redis_publish.rb -n 1000000
time_unit: i
#-----------
snapshot=0
#-----------
time=0
mem_heap_B=0
mem_heap_extra_B=0
mem_stacks_B=0

yorickpeterse

diff --git a/rss_growth_during_redis_publish.rb b/rss_growth_during_redis_publish.rb
index f6d1526..cecfdef 100755
--- a/rss_growth_during_redis_publish.rb
+++ b/rss_growth_during_redis_publish.rb
@@ -8,6 +8,14 @@ require 'celluloid/io'  # Unclear if this is required, or if Celluloid will hand
 require 'celluloid/redis'
 require 'celluloid/autostart'
 
+Thread.new do
+  loop do

yorickpeterse

# Since public domain doesn't exist everywhere in the world and people might
# actually want to use this snippet here's the license (you can leave out
# the lines preceding it):
#
# Copyright (c) 2014, Yorick Peterse
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

yorickpeterse

#!/usr/bin/env bash

# Small wrapper around the actual command used to start the daemon. This
# wrapper allows us to set various environment variables before Ruby is
# started.
#
# See the following URLs for more information on these options and their
# values:
#
# http://samsaffron.com/archive/2014/04/08/ruby-2-1-garbage-collection-ready-for-production

yorickpeterse

[yorickpeterse in oga]$ pry -r ./lib/oga
2.1.2p95 > Oga::XPath::Parser.new('/div[@class="container"]/div[@class="review"]').parse
=> (xpath
  (path
    (name nil "div")
    (eq
      (axis "attribute" "class")
      (string "container")))
  (path
    (name nil "div")

yorickpeterse

2.1.2p95 > require 'csv'
=> true
2.1.2p95 > headers = %w{foo bar}
=> ["foo", "bar"]
2.1.2p95 > row = CSV::Row.new(headers, [10, 20])
=> #<CSV::Row "foo":10 "bar":20>
2.1.2p95 > headers.map(&:frozen?)
=> [true, true]
2.1.2p95 > headers.first.upcase!
RuntimeError: can't modify frozen String

yorickpeterse

require 'gir_ffi-gtk3'
require 'sequel'

GirFFI.setup :GtkSource

Gtk.init

Thread.abort_on_exception = true

client = Sequel.connect(