jreisinger

package main

import (
	"fmt"
	"github.com/oschwald/geoip2-golang"
	"log"
	"net"
	"os"
)

jreisinger

package main

import (
	"fmt"
	"math/rand"
)

// An abstract type, i.e. an interface
type shuffler interface {
	Len() int

jreisinger

package main

import (
	"fmt"
)

type SummableSlice []int

func (s SummableSlice) sum() int {
	sum := 0

jreisinger

package main

import (
	"fmt"
	"math/rand"
	"sync/atomic"
	"time"
)

var (

jreisinger

package main

import (
	"fmt"
	"math/rand"
	"time"
)

func reader(ch chan int) {
	t := time.NewTimer(10 * time.Second)

jreisinger

package main

import (
	"fmt"
	"time"
)

func printer(msg string, stopCh chan bool) {
	for {
		select {

jreisinger

// There's no "channel broadcast" in Go, i.e. you can't send something to multiple goroutines using the same channel. However you can close the channel and all goroutines will be notified.

package main

import (
	"fmt"
	"time"
)

func printer(msg string, goCh chan bool) {

jreisinger

package main

import (
	"fmt"
	"time"
)

// emit words onto the channel until the timer kicks in
func emit(wordChannel chan string) {
	defer close(wordChannel)

jreisinger

package main

import "fmt"

// printArray prints type, elements' values, capacity and length of an array
func printArray(a [3]int) {
    fmt.Printf("%T\t", a)
    for _, v := range a {
        fmt.Printf("%d ", v)
    }

jreisinger

#!/bin/bash

echo "--> create VMs..."
for i in 1 2 3; do
    docker-machine create -d virtualbox node-$i
done

echo "--> initialize swarm master..."
eval $(docker-machine env node-1)
docker swarm init \