infomaven

for (var i =1; i < 21; i++) {
  if( i%3 === 0 && i%5 === 0 ) {
      console.log("FizzBuzz");
  } else if ( i%5 === 0 ) {
      console.log("Buzz");
  } else if (i%3 === 0 ) {
      console.log("Fizz");
  } else {
      console.log(i);
  }    

infomaven

package sensorData

import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.jdbc.Predef._  // maybe not needed?
import scala.concurrent.duration._
import com.redis._
import io.gatling.redis.feeder._

infomaven

object Settings {
  final val Host = "host"
  final val Protocol = "protocol"

  object User {
    final val Name = "username"
    final val Password = "password"
  }

  object Subject {

infomaven

val httpProtocol = http.baseURL("http://localhost:8000")
 
case class TestSetup(repeat: Int, users: InjectionStep, label: String) // <-- config holder
 
val sequentialUserTest = TestSetup(repeat = 100, atOnce(1 user), "sequential 1 user")
val oneUserPer4sTest = TestSetup(repeat = 2, constantRate(0.25 userPerSec).during(5 minutes), "1 usr/4s, 2 req / user")
val threeCentIn5Mins = TestSetup(repeat = 5, ramp(300).over(5 minute), "300 usr w/ 5 req in 5 mins")
 
val testSetUp = sequentialUserTest // <-- config selection (could be also done at runtime)
 

infomaven

While you can get the public and private IP address of your Amazon EC2 instance via the AWS Console, it may be extremely useful to query it from anywhere you can make an HTTP request, such a shell script. The operation is really simple, just make a GET request to the following URL from within your EC2 instance:

Local IP:

curl http://169.254.169.254/latest/meta-data/local-ipv4
Public IP:

curl http://169.254.169.254/latest/meta-data/public-ipv4
I often use this feature to pre-configure services and update configuration files, as in EC2 you get a new IP Address each time you reboot

infomaven

/*
Write a program that prints out the numbers 1 to 100 (inclusive).
If the number is divisible by 3, print Crackle instead of the number.
If it's divisible by 5, print Pop. If it's divisible by both 3 and 5,
print CracklePop. You can use any language.

 */
/// any number x where x % y is divisible by that number. We'll use that fact to match boolean patterns in Scala. 
//// In Scala RePL, copy-paste the function first. Then use the function in a second call from the REPL.
def listEval( number: Int ): String = (number % 3, number % 5 ) match {

infomaven

package src.main.java;

import java.util.Collections;
import java.util.List;

/**
 * Created by nwhit8 on 11/1/15.
 */
public class Day {

infomaven

// create an alternative method for getting a list of defined enums to avoid system creating a clone of the String array
// this is the .values() method

public enum Car {
  TESLA, VOLVO, TOYOTA;
  }
  
// normally what would happen
public static Car[] values() {
  return (Car[])$VALUES.clone();

infomaven

/* MAVEN TO GRADLE */
- Navigate to directory where the POM is located
- Run gradle init
> this will convert the Maven build to Gradle build (new settings.gradle & one or more build.gradle files)


/* GRADLE TO MAVEN */
- Add Maven plugin to build.gradle file
ex. 
apply plugin: 'java'

infomaven

/*
Take note of length - it is used as a String[] property > strings.length AND as a method for a String 
array element > strings[i].length().
*/
public Map<String, String> pairs(String[] strings) {
  Map<String,String> map = new HashMap<String,String>();
  
  for (int i = 0; i < strings.length; i++ ) {
    if (strings[i].length() == 1 ) {
      Character first = strings[i].charAt(0);