jacobo’s gists

jacobo / gist:5166690

Created March 15, 2013 00:59

confused by sleep

	require 'celluloid'

	class DiCaprio
	include Celluloid

	def do_a_thing
	puts "starting"
	`sleep 1`
	puts "finished"
	end

jacobo / trap_loop.rb

Created March 29, 2013 23:39

	class TrapLoop
	trap('TERM') { stop! }
	trap('INT') { stop! }
	trap('SIGTERM') { stop! }

	def self.stop!
	@loop = false
	end

	def self.safe_exit_point!

jacobo / gist:5338789

Created April 8, 2013 17:40

	ERROR: no command given

	Usage: test_worker <command> <options> -- <application options>

	* where <command> is one of:
	start start an instance of the application
	stop stop all instances of the application
	restart stop all instances and restart them afterwards
	run start the application and stay on top
	zap set the application to a stopped state

jacobo / gist:5391690

Created April 15, 2013 22:10

debugging in the console

	class SimpleViz
	def initialize(app, &lookup)
	@app = app
	end
	def call(env)
	puts caller
	request = Rack::Request.new(env)
	puts "-> #{request.request_method.upcase} (#{request.url})"
	status, headers, body = @app.call(env)
	puts "<--#{status}-- #{body.size}"

jacobo / gist:5393037

Created April 16, 2013 03:01

re-create datamapper database in console

	DataMapper.repository(@repository).adapter.extend(SQL::Mysql)
	DataMapper.repository(@repository).adapter.recreate_database

jacobo / gist:5600586

Created May 17, 2013 17:24

	require 'celluloid'
	class Worker
	include Celluloid
	def work(x)
	sleep 0.2; puts x*x
	end
	end
	worker_pool = Worker.pool(size: 10)
	(0..99).to_a.each{\|x\| worker_pool.async.work x }
	sleep 2 #how do I wait the right amount of time before terminating?

jacobo / block_refinement.rb

Last active December 17, 2015 22:19

In http://rubykaigi.org/2013/talk/S58 @Shogu describes how refinements work, but says he would rather they work with a block-like syntax. I asked why he couldn't just implement these extensions in pure ruby using the same techniques that stub and mock libraries use. The translated answer was "Because I want to refinement only to apply inside the…

	class BlockRefinement

	def self.refines(*classes_refined)
	@classes_refined = classes_refined
	end

	def self.refines_method(method_refined, &new_method)
	@classes_refined.each do \|class_refined\|
	old_method = class_refined.instance_method(method_refined)
	@reverts \|\|= []

jacobo / alternate_refinements.rb

Created May 31, 2013 01:37

Yet another example of implementing something LIKE refinements directly in pure ruby. I run into the contraint of being unable to properly set 'self' in my blocks. (could be solved if I had https://bugs.ruby-lang.org/issues/8465) AND, it's very hacky because it uses caller. but I *think* this is what @Shogu generally intends the semantics of blo…

	class BlockRefinement

	def self.refines(*classes_refined)
	@classes_refined = classes_refined
	end

	def self.refines_method(method_refined, &new_method)
	@classes_refined.each do \|class_refined\|
	old_method = class_refined.instance_method(method_refined)
	@reverts \|\|= []

jacobo / nokobugo.rb

Created June 20, 2013 20:59

	require 'rubygems'
	require 'nokogiri'

	str = "<select id=\"cluster_configuration_data_snapshot_id\" name=\"cluster_configuration[data_snapshot_id]\"></select>"

	#This one fails
	failing = Proc.new do
	innards = "<option data-size=\"15\" value=\"\" volume_size=\"\">New volume</option>\n<option class=\"time\" data-html-suffix=\" (snap-f2e4f551) (Application Master) [64-bit]\" data-size=\"15\" datetime=\"2013-06-20T20:29:32+00:00\" value=\"8\" volume_id=\"14\" volume_size=\"15\" selected>\nThu Jun 20 20:29:32 2013 (snap-f2e4f551) (Application Master) [64-bit]\n</option>"
	x = Nokogiri::XML::Element.new('select', Nokogiri::XML(str))
	x.inner_html = innards

jacobo / gist:5870675

Last active December 19, 2015 00:39

There should be a button in github UI for doing this...

	git remote add upstream https://github.com/resque/resque.git
	git fetch upstream
	git checkout master
	git merge upstream/master
	git push origin master

Jacob Burkhart jacobo