ardbytes

# References: 
#
# https://en.wikipedia.org/wiki/Base64

require 'base64'

TABLE = ('A'..'Z').to_a + ('a'..'z').to_a + ("0".."9").to_a + ['+','/']

class String
  def bit_string

ardbytes

PLAYER_SYMBOL = "X"
COMPUTER_SYMBOL = "O"

WINNING_COMBINATION =
  {
    0 => [[0, 1, 2], [0, 3, 6], [0, 4, 8]],
    1 => [[0, 1, 2], [1, 4, 7]],
    2 => [[0, 1, 2], [2, 5, 8], [2, 4, 6]],
    3 => [[0, 3, 6], [3, 4, 5]],
    4 => [[0, 4, 8], [3, 4, 5], [2, 4, 6], [1, 4, 7]],

ardbytes

Context

This tweet explains it all.

I have a huge pile of papers on my computer waiting to be read. Often I read parts of it immediately after I see the paper, but I forget about it until someone points on another article, how awesome that paper is. I then remember to read it more carefully.

One way to fix it is to work with like minded people and have serious (non-hand wavy) discussion around the paper.

The list below will grow. My hard disk has more papers than I can count. I have carefully chosen a list of very readable papers in the list below. Special thanks for the authors for publishing their great ideas.

ardbytes

def merge_sort(a, lo, mid, hi)

  # a[lo..mid] and a[mid+1..hi] must be sorted

  dup = a.clone

  # index for the left sub-array: lo <= i <= mid
  i = lo

  # index for the right sub-array: mid+1 <= j <= hi

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* Immutability
  - Persistent data-structures. Once created, cannot be changed.
  - All modifications result in a new data-structure being created.
  - New data-structures are efficiently created from old ones through structural sharing.

* Identity
  - Identity is logical.
  - Changes over time. For example, Kaveri River.

* State

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(defn factorial [n]
  (apply * (range 1 (inc n))))
 
(println (format "Factorial of 5 is: %s" (factorial 5)))

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#!/usr/bin/zsh
# post-checkout hook to adjust heroku.remote based on the branch being checked out.
#
# Do nothing on file checkout
[[ $3 -eq 0 ]] && exit

echo "Fixing heroku.remote"

current_branch=$(git symbolic-ref HEAD)

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require "oauth"

@consumer_key = <your-consumer-key>
@consumer_secret = <your-consumer-secret>

@consumer = OAuth::Consumer.new(@consumer_key, @consumer_secret, 
{ 
:site => 'https://api.login.yahoo.com', 
:request_token_path => '/oauth/v2/get_request_token', 
:access_token_path => '/oauth/v2/get_token', 

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200 : OK
201 : CREATED
202 : ACCEPTED
204 : No Content
301 : Moved Permanently
302 : Found
303 : See Other
304 : Not Modified
307 : Temporary Redirect
400 : Bad Request

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* Always tell never ask.

* Never use if's.

* Never create objects that don't have both state and methods.