golang tour exercises

41.go

package main

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

func WordCount(s string) map[string]int {
    m := make(map[string]int);
    for _, vv := range strings.Fields(s) {        
        m[vv] = m[vv] + 1
    }
    return m
}

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

44.go

package main

import "fmt"

// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func() int {
	x := -1
	y := 1
	z := 0
	return func() int {
		z = x + y
		x = y
		y = z
		return z
	}
}

func main() {
	f := fibonacci()
	for i := 0; i < 20; i++ {
		fmt.Printf("fibonacci(%d) = %d\n", i, f())
	}
}