Go tour "WordCount" method: http://tour.golang.org

Maps Go Tour Exercise

package main

import (
    "code.google.com/p/go-tour/wc"
    "strings"
)

func WordCount(s string) map[string]int {
    tokens  := strings.Fields(s)
    hashmap := make(map[string] int)
    var acc    int
    var exists bool
    
    for i := 0; i < len(tokens); i++ {
        elem       := tokens[i]
        acc, exists = hashmap[elem]
        if exists {
            hashmap[elem] = acc + 1
        } else {
            hashmap[elem] = 1
        }
    }
    
    return hashmap
}

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