havenwood

class Integer
  def collatz_chain_size
    n = self
    chain = []
    until n == 1
      chain << n
      n.even? ? n /= 2 : n = n * 3 + 1
    end
    [chain.size, chain.first]
  end

havenwood

class Weazel
  CHARS = [*'A'..'Z', ' ']

  def initialize target
    @target = target
    @best = Array.new(28) { CHARS.sample }.join
  end

  def call
    0.upto Float::INFINITY do |n|

havenwood

#!/bin/sh

gem search --no-vers | parallel -j0 -I$ 'curl -O `curl https://rubygems.org/api/v1/gems/$.json | jq -r .gem_uri`'

havenwood

class Chromosome
  attr_accessor :bit_string, :fitness

  def initialize length, bit_string = nil
    @length = length

    if bit_string.nil?
      generate_random length
    else
      @bit_string = bit_string

havenwood

# A simple translate from a string to integer.
# A minus before all numbers will be consider to be a negative number.


def atoi(str)
	return str if !str.is_a? String

	fixed_str = fix(str)

	result = 0

havenwood

module AtoiString
  refine String do
    def atoi
      fixed_self = fix self
      
      result = 0
      fixed_self.each_char do |c|
        result = result * 10 + c.to_i
      end
  

havenwood

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

havenwood

require 'json'

test2 = {
  :foo1 => {
    :target => "Something1",
    :alias  => "some_alias1"
  },
  :foo2 => {
    :target => "Something2",
    :alias  => "some_alias2"

havenwood

require "./alfred"

results = Alfred::Feedback.new

available_outputs = `./SwitchAudioSource -a | grep "(output)" | sed 's/ (output)$//'`
current_output = `./SwitchAudioSource -c`

def ditch_line available, current
  available.split("\n").delete_if { |line| line == current }.join("\n")
end

havenwood

array = (1..12).map &:to_s

class Array
  def insert_every n, this
    each_slice(n).inject { |r, a| r << this << a }.flatten
  end
end

array.insert_every 3, ','
#=> ["1", "2", "3", ",", "4", "5", "6", ",", "7", "8", "9", ",", "10", "11", "12"]