JoshCheek

# https://twitter.com/clarkkampfe/status/1069960462865981440
ruby -e h,w=$LINES,$COLUMNS/2'
   rows = [{}]
   [[6, true], [3, false], [1, true], [2, false], [1, true], [1, false]].flat_map { |n, val| [val]*n }.cycle.take(w+h).each_with_index { |val, i| rows[0][i] = val }
   [[1, true], [3, false]].flat_map { |n, val| [val]*n }.cycle.take(h).each_with_index { |val, i| rows[0][i-w/2] = val }
   def rows.rule
     65
   end
   def rows.at(x, y)
     row = (self[y] ||= {})

JoshCheek

# $ crystal build 357.cr --release
struct SeiveSlot
  property number, divisors

  def initialize(@number : Int32)
    @divisors = [] of Int32
  end

  def prime?
    @divisors.size == 2 && @divisors[0] == 1 && @divisors[1] == @number

JoshCheek

require 'graphics'
require 'matrix'

class Moire < Graphics::Simulation
  include Math
  def initialize(*args, distance:, radius:, frames_per_rotation:)
    super *args
    @fpr          = frames_per_rotation
    @radius       = radius
    @to_center    = translate -w/2, -h/2

JoshCheek

require 'socket'
FORWARDED_SIGNALS = %w(INT QUIT USR1 USR2 INFO WINCH) & Signal.list.keys

receiver = UNIXSocket.new('whatevz.sock')
pid = receiver.gets.to_i
receiver.send_io $stdin
receiver.send_io $stdout
$stdin.close
$stdout.close

JoshCheek

send :if, if: :if if def if if: :if
  def >>* my, oh: ($/=my*$* if/=?$/ if$==?))
    $$/%/#$//
  end
else
  if def
    alias alias: :alias
  else def
    begin
      alias $$$>

JoshCheek

def memoized_each(&block)
  memo, enum = [], Enumerator.new(&block)
  Enumerator::Lazy.new 0.step do |y, i|
    memo << enum.next if memo.size <= i
    y << memo[i]
  end
end

fibs = memoized_each { |y|
  y << 0 << 1

JoshCheek

# these are reconstructed from a shell session without runnig them, so make
# sure you check that it's a sane thing to do before running it, I make no
# guarantees of fitness, and accept no liability. Run at your own risk.
sudo launchctl remove com.snap.SnapCameraRemover
rm -r ~/Library/Caches/Snap/
rm -r ~/Library/Caches/com.snap.SnapCamera/
rm -r ~/Library/Preferences/Snap/
rm ~/Library/Preferences/com.snap.SnapCamera.plist
rm ~/Library/Preferences/com.snap.Snap\ Camera.plist
sudo rm -rf /Applications/Snap\ Camera.app/

JoshCheek

require 'pg'
db = PG.connect dbname: 'josh_testing'
db.exec 'begin'

def db.exec(*)
  super.to_a
rescue
  $!.set_backtrace caller.drop(1)
  raise
end

JoshCheek

#!/usr/bin/env bash
# a variation on https://twitter.com/r00k/status/1057657001013100544
function git-nuke() {
  local local_branch="$1"
  local upstream="$(git rev-parse --abbrev-ref "$local_branch"'@{upstream}')"
  if [[ -n "$upstream" ]]; then
    IFS=/ read remote_repo remote_branch <<<"$upstream"
    git push "$remote_repo" --delete "$remote_branch" && git branch -D "$local_branch"
  else
    exit 1

JoshCheek

# curves http://turtle.audio/play/m1f61t
# curves + music: http://turtle.audio/play/7ws2y4

# Hilbert
str = "A"
4.times { str.gsub! /[AB]/, "A" => "lBmrAmArmBl", "B" => "rAmlBmBlmAr" }
nil while str.gsub! /lr|rl|[AB]/, ""
str # => "mlmlmrmmrmrmlmlmrmrmmrmlmlmmlmrmrmlmmlmlmrmrmlmlmmlmrmrmmmrmrmlmmlmlmrmrmlmlmmlmrmrmlmmlmlmrmmrmrmlmlmrmrmmrmlmlmrmmrmrmlmmlmlmrmrmlmlmmlmrmrmmrmlmlmrmmrmrmlmlmrmrmmrmlmlmmmlmlmrmmrmrmlmlmrmrmmrmlmlmrmmrmrmlmmlmlmrmrmlmlmmlmrmrmlmlmrmrmlmmlmlmrmrmlmlmmlmrmrmmrmlmlmrmmrmrmlmlmrmrmmrmlmlmmmlmlmrmmrmrmlmlmrmrmmrmlmlmrmmrmrmlmmlmlmrmrmlmlmmlmrmrmmrmlmlmrmmrmrmlmlmrmrmmrmlmlmmlmrmrmlmmlmlmrmrmlmlmmlmrmrmmmrmrmlmmlmlmrmrmlmlmmlmrmrmlmmlmlmrmmrmrmlmlmrmrmmrmlmlm"

# Dragon