Shannon Skipper havenwood

havenwood / async.rb

Created November 16, 2019 15:06

Example Async equivalent to code naftilos76's code that phaul is helping with on #ruby IRC: https://gist.github.com/phaul/2b2166c913452f010b1513a8165ab287

	require 'async'

	condition = Async::Condition.new

	Async do
	task_one = Async do
	loop do
	puts 'task one before waiting'
	condition.wait
	end

havenwood / node.rb

Last active November 13, 2019 18:28

Playing with Enumerator.produce from Ruby 2.7

	# frozen_string_literal: true

	class Node
	attr_reader :value
	attr_reader :parent

	def initialize(value:, parent: nil)
	@value = value
	@parent = parent
	end

havenwood / erb.rb

Created November 12, 2019 22:51

Example YAML template for Net on #ruby channel IRC

	require 'erb'
	require 'psych'

	topic = :users
	users = %w[wombat fox poodle]

	template = ERB.new <<~END, trim_mode: '-'
	---
	:<%= topic %>:
	<%- users.each do \|user\| %>

havenwood / make_it_work.rb

Created November 7, 2019 06:27

An answer to crella133's question in #ruby IRC

	class Foo
	def initialize(a, b, c:)
	puts 'Foo!'
	end
	end

	class MakeItWork < Foo
	def initialize(args, *kwargs, &block)
	parameters = method(__method__).super_method.parameters

havenwood / response_enumerator.rb

Created November 6, 2019 00:18

	class ResponseEnumerator < Enumerator
	DEFAULT_PER_PAGE = 25

	attr_accessor :per_page

	def initialize(square, http_verb:, path:, data:,
	fields:, parameters: {}, memoize: true, per_page: nil)
	@per_page = per_page \|\| DEFAULT_PER_PAGE
	@memoized_responses = []
	@params = parameters.fetch :params

havenwood / cipher.rb

Created November 5, 2019 16:12

Ruby Example of AES-256 in CBC Mode for consti on #ruby IRC


	secret = 'cicada'
	key = 'wombat'

	cipher = OpenSSL::Cipher::AES256.new :CBC
	cipher.encrypt
	salt = OpenSSL::Random.random_bytes 16
	cipher.key = OpenSSL::PKCS5.pbkdf2_hmac_sha1 key, salt, 20000, 32
	iv = cipher.random_iv

havenwood / delegate_class.rb

Last active October 20, 2019 14:39

An example using DelegateClass with core Classes. For the why, see: https://words.steveklabnik.com/beware-subclassing-ruby-core-classes

	class FerretString < String
	def to_s
	'Successfully overrode ...'
	end
	end

	class WombatString < DelegateClass(String)
	def initialize
	super('')
	end

havenwood / sig.rb

Created October 1, 2019 13:25

An example for Nathanael7 on #ruby IRC

	def sig(method_name)
	meth = method(method_name)
	parameters = meth.parameters.map do \|type, name\|
	case type
	when :req
	name
	when :rest
	"*#{name}"
	when :opt
	# Unknown default argument.

havenwood / spike.rb

Last active April 11, 2024 14:02

A spike showing compiling IR binaries for all gems

	# frozen_string_literal: true

	require 'fileutils'
	require 'find'
	require 'zlib'

	binaries_dir = File.join Gem.dir, 'binaries'
	gems_dir = File.join Gem.dir, 'gems'

	Dir['*/', base: gems_dir].each do \|gem\|

havenwood / heater.rb

Created September 26, 2019 11:54

Response to nima_m on #ruby IRC asking how to implement this state machine in Ruby: https://pasteboard.co/Izbzhuz.png