A Tour of Go: Maps Exercise solution w/o strings.Fields

maps.go

package main

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

func WordCount(s string) map[string]int {
    res := make(map[string]int);
    str := make([]rune,0,10)
    for _, r := range(s){
        if r == ' ' {
            res[string(str)]++
            str = make([]rune,0,10)
        }else{
            str = append(str,r)
        }
    }
    res[string(str)]++
    return res
    
}

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

Used unicode.IsSpace instead. Still don't like the fact that a new rune array/slice must be allocated every time a token ends, since slices can't use negative indexes i guess this is the only option...

package main

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

func WordCount(s string) map[string]int {
    res := make(map[string]int);
    str := make([]rune,0,10)
    for _, r := range(s){
        if unicode.IsSpace(r) {
            res[string(str)]++
            str = make([]rune,0,10)
        }else{
            str = append(str,r)
        }
    }
    res[string(str)]++
    return res

}

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