Shannon Skipper havenwood

havenwood / example.rb

Last active April 6, 2025 19:33

An example of a Rust-like `Option` enum in Ruby, see https://doc.rust-lang.org/rust-by-example/std/option.html

	require_relative 'option'

	include Option

	# An integer division that doesn't `raise ZeroDivisionError`
	def checked_division(dividend, divisor)
	if divisor.zero?
	# Failure is represented as the `None` variant
	None[]
	else

havenwood / inline_runner.rb

Created September 28, 2022 20:32

A little script to run RuboCop on a Ruby String from within Ruby

	require 'rubocop'
	require 'tempfile'

	class InlineRunner
	DEFAULT = RuboCop::Runner.new({}, RuboCop::ConfigStore.new)

	def initialize(runner: DEFAULT, filename: 'runner.rb')
	@runner = runner
	@file = Tempfile.new(filename)
	end

havenwood / example.rb

Created August 31, 2022 00:10

Rust-inspired `struct` and `impl` in Ruby for fun

havenwood / arithmetic_sequence.rb

Last active March 29, 2024 00:22

An example of implementing a JSON addition to support Enumerator::ArithmeticSequence

	# frozen_string_literal: true

	require 'json' unless defined?(JSON::JSON_LOADED) && JSON::JSON_LOADED

	class Enumerator
	class ArithmeticSequence
	# See #as_json.
	def self.json_create(object)
	Range.new(*object.values_at('b', 'e', 'x')) % object['s']
	end

havenwood / atomic_move.rb

Created August 12, 2022 17:56

Example of atomic move for #ruby IRC

	require 'fileutils'
	require 'tempfile'

	def write_atomically(content, temp_name: 'temp.txt', atomic_path: 'atomic.txt')
	temp = Tempfile.new temp_name
	temp.write content
	temp.close

	FileUtils.mv temp.path, atomic_path
	ensure

havenwood / each.rb

Created July 5, 2022 18:44

An example of why we use `each` rather than `for` and what semicolon block args do for #ruby IRC

havenwood / class_mixin.rb

Created July 3, 2022 00:49

My example for Ruby #irc showing how you can contort and mixin class methods.

	require 'digest/md5'

	class_name = Digest::MD5
	module class_name::Mixin
	end

	class_name::Mixin.class_eval do
	class_name.public_methods(false).each do \|method_name\|
	define_method method_name, class_name.public_method(method_name).to_proc
	end

havenwood / skynet.rb

Created May 3, 2022 00:14

A port of the Crystal "skynet" code to Ruby, see https://bugs.ruby-lang.org/issues/18760

	require 'async'
	require 'async/queue'

	def skynet(c, num, size, div)
	if size == 1
	c << num
	else
	rc = Async::LimitedQueue.new(div)
	sum = 0
	div.times do \|i\|

havenwood / example.rb

Last active April 29, 2022 14:03

Kaprekar's Constant in Ruby

	require_relative 'kaprekar'

	include Kaprekar

	p kaprekar(four_digit_number: 9000).first(10)
	#>> [9000, 8991, 8082, 8532, 6174, 6174, 6174, 6174, 6174, 6174]

	p kaprekar(four_digit_number: 9000).take_while { _1 != Kaprekar::CONSTANT }
	#>> [9000, 8991, 8082, 8532]

havenwood / Gemfile

Created March 10, 2022 20:49