eaorak

eaorak

import path from 'path';

export default {
  debug: true,
  devtool: 'inline-source-map',
  noInfo: false,
  entry: [
    path.resolve(__dirname, 'src/index')
  ],
  target: 'web',

eaorak

{
  "name": "javascript-development-environment",
  "version": "1.0.0",
  "description": "JavaScript development environment Pluralsight course by Cory House",
  "scripts": {
  },
  "author": "Cory House",
  "license": "MIT",
  "dependencies": {
    "whatwg-fetch": "1.0.0"

eaorak

/*

Overview
--------

To run a query using anorm you need to do three things:

 1. Connect to the database (with or without a transaction)
 2. Create an instance of `anorm.SqlQuery` using the `SQL` string interpolator
 3. Call one of the methods on `SqlQuery` to actually run the query

eaorak

// To be able to easily print RDD content, you can either create a function inside the shell or an implicit class
// Ref to my answer: http://stackoverflow.com/a/41317574/1095213

def p(rdd: org.apache.spark.rdd.RDD[_]) = rdd.foreach(println) // Option 1

implicit class Printer(rdd: org.apache.spark.rdd.RDD[_]) { // Option 2
    def print = rdd.foreach(println)
}

// Example

eaorak

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

eaorak

Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

eaorak

package recfun

import scala.collection.mutable.ListBuffer
import common._

/** https://class.coursera.org/progfun-2012-001/assignment/view?assignment_id=4 */
object Main {
  def main(args: Array[String]) {
    println("Pascal's Triangle")
    for (row <- 0 to 10) {

eaorak

__author__ = 'ender'

import numpy as np
import Image
import os

os.chdir('image_dir')
for file in os.listdir('.'):
    if not file.endswith('.gif'):
        continue

eaorak

##############################################################################
# This script can be used for setting DNS on Mac computers from command line.
# It either sets dns to google dns servers when no parameter is provided 
# or empties DNS settings when called with 'none'.
##################################################################### eaorak #
#!/bin/bash

dns='8.8.8.8 8.8.4.4'
empty='empty'