A Tour of Go - Maps Exercise Answer

wordcount.go

package main

import (
	"golang.org/x/tour/wc"
	"strings"
)

func WordCount(s string) map[string]int {
	m := make (map[string]int)
	words := strings.Fields(s)
	for _, key := range words{
		_, ok := m [key]
		if ok{
			m [key] ++
		} else {
			m [key] = 1
		}
	}
	return m
}

func main() {
	wc.Test(WordCount)
}