m-mujica

const fs = require('fs');
const recast = require('recast');

const types = require('ast-types');
const n = types.namedTypes;
const b = types.builders;

const filePath = process.argv[2];
const source = fs.readFileSync(filePath);
const ast = recast.parse(source);

m-mujica

function Graph() {
  this.nodes = [];
  this.arrows = new Map();
}

// Tarjan's strongly connected components algorithm
Graph.prototype.stronglyConnectedComponents = function tarjan() {
  var index = 0;
  var stack = [];
  var result = [];

m-mujica

<script src="node_modules/steal/steal.js"></script>
<script>
    var oldNormalize = System.normalize;
    System.normalize = function(name, parentName){
        return oldNormalize.apply(this, arguments).then(function(name){
            if(name === "my/module") {
                console.log(name, "is imported by", parentName);
            }
            return name;
        });

m-mujica

-- Exercise 1 

-- We need to first find the digits of a number. 
-- Define the functions
 
--   toDigits :: Integer -> [Integer]
--   toDigitsRev :: Integer -> [Integer]
--   toDigits should convert positive Integers to a list of digits. (For 0 or
--   negative inputs, toDigits should return the empty list.) toDigitsRev
--   should do the same, but with the digits reversed.

m-mujica

// write a function that takes an argument
// and returns that argument.

function identity(x) {
  return x;
}

// write two binary functions, add and mul,
// that take two numbers and return their sum and product.

m-mujica

require 'date'

def is_valid_date? year, month, day
  return false if year < 2000 || year > 2999
  Date::valid_date?(year, month, day)
end

class Date

  def is_valid_date_for_millenium? millenium

m-mujica

A zero-indexed array A consisting of N integers is given.

An equilibrium index of this array is any integer P such that 0 ≤ P < N
and the sum of elements of lower indices is equal to the sum of elements of higher indices,

i.e. A[0] + A[1] + ... + A[P−1] = A[P+1] + ... + A[N−2] + A[N−1].

Sum of zero elements is assumed to be equal to 0. This can happen if P = 0 or if P = N−1.
For example, consider the following array A consisting of N = 7 elements:
A[0] = -7   A[1] =  1   A[2] = 5

m-mujica

var sum = function sum(x, y) {
  if (!x) {
    x = 200;
  }
  
  if (!y) {
    y = 300;
  }
  
  return x + y;

m-mujica

$ curl -o latest.dump `heroku pgbackups:url -a APPLICATION_NAME`
$ rake db:reset
$ pg_restore --verbose --clean --no-acl --no-owner -h localhost -U root -d YOUR_LOCAL_DB_NAME latest.dump
$ rm latest.dump

m-mujica

Original Instructions

http://pragtob.wordpress.com/2012/09/12/setting-up-postgresql-for-ruby-on-rails-on-linux/

sudo apt-get install postgresql

tobi@speedy ~ $ sudo su postgres
[sudo] password for tobi:
postgres@speedy /home/tobi $ createuser tobi(substitute with your username)
Shall the new role be a superuser? (y/n) n