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Shannon Skipper havenwood

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@havenwood
havenwood / yarb.rb
Created January 22, 2023 18:00
A quick example for #ruby IRC of yomikomu-like compiling Ruby to YARB IR bytecode, caching it to disk, then loading and evaling it later.
require 'zlib'
path = 'example.rb'
##
# Compile and cache Ruby binary to disk.
binary = RubyVM::InstructionSequence.compile_file(path).to_binary
binary_path = "#{path}.yarb.gz"
Zlib::GzipWriter.open(binary_path) do
_1.write(binary)
@havenwood
havenwood / wombat.rb
Created January 19, 2023 23:49
require 'forwardable'
class Wombat
NO_DEFAULT = Object.new
include Comparable
include Enumerable
extend Forwardable
def_delegators :@list, :[], :[]=, :fetch, :<<, :delete, :size, :<=>
@havenwood
havenwood / stream_closing.rb
Created January 19, 2023 16:47
Curious about line 66 and line 70 differences between Falcon and Puma handling of the stream.
# frozen_string_literal: true
require 'trenni/template'
##
# Streaming template
TEMPLATE = Trenni::Template.load(<<~'HTML')
<!DOCTYPE html>
<html lang="en">
<head>
@havenwood
havenwood / bendford.rb
Last active November 2, 2022 06:36
A quick implementation to generate numbers that roughly comply with Bendford's law.
module Bendford
VARIED_DIGITS = 5
PLACES = [
[0, *(1..9).map { Math.log10(1.fdiv(_1) + 1) }],
*(2..VARIED_DIGITS).map do |place|
(0..9).map do |d|
(10 ** (place - 2)..((10 ** (place - 1)) - 1)).sum do
Math.log10(1 + 1.fdiv(10 * _1 + d))
end
end
@havenwood
havenwood / client.rb
Created October 23, 2022 14:25
A Rack 3 example of bidirectional streaming with Async HTTP
# frozen_string_literal: true
require 'async/http/internet'
Async do
internet = Async::HTTP::Internet.new
response = internet.get('http://localhost:9292')
stream = response.connection.stream
stream.write('Hello World!')
@havenwood
havenwood / integer_prime.rb
Created October 13, 2022 22:49
Comparing 42.prime? to Prime.prime?(42) for Ruby IRC
class Integer
def prime?
return self >= 2 if self <= 3
if (bases = miller_rabin_bases)
return miller_rabin_test(bases)
end
@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
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
havenwood / example.rb
Created August 31, 2022 00:10
Rust-inspired `struct` and `impl` in Ruby for fun
require_relative 'kernel'
struct :Point do
{
x: 0,
y: 0,
z: 0
}
end
@havenwood
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