MITx Week One

gistfile1.txt

{
 "metadata": {
  "language": "Julia",
  "name": ""
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Week One"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Starting with Hello World\n",
      "\n",
      "println(\"Hello World\")\n",
      "println()\n",
      "# Julia requires () like Python 3 and has a printing function\n",
      "#  print with no linefeed or println including a line feed.\n",
      "#  Note that println is a function so it needs the ()"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Hello World\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n"
       ]
      }
     ],
     "prompt_number": 11
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# And then a conditional test\n",
      "\n",
      "variable_named_bob = 5\n",
      "\n",
      "if variable_named_bob < 900\n",
      "    print(\"Hello\", \" \")\n",
      "    println(\"World\")\n",
      "end\n",
      "\n",
      "# notice no colons or brackets required but instead we have an end\n",
      "#  also you can use a ; instead of a new line and Julia really \n",
      "#  isn't worried about indentation or extra spaces so I could have\n",
      "#  written this instead\n",
      "\n",
      "if variable_named_bob < 900\n",
      "println    (    \"Hello World 2\"   )  ; end\n",
      "\n",
      "# You can also use the ternary operator\n",
      "variable_named_bob < 900 ? println(\"Hello World 3\") : nothing\n",
      "\n",
      "# and you can use short circuit evaluation\n",
      "variable_named_bob < 900 && println(\"Hello World 4\")"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Hello "
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "World\n",
        "Hello World 2\n",
        "Hello World 3\n",
        "Hello World 4\n"
       ]
      }
     ],
     "prompt_number": 7
    },
    {
     "cell_type": "heading",
     "level": 3,
     "metadata": {},
     "source": [
      "and the rest of this week is about installing Python"
     ]
    }
   ],
   "metadata": {}
  }
 ]
}