Fibonacci goroutine

---

examples/fibonacci-goroutine/fibonacci_goroutine.go

package main

import (
    "fmt"
)

func fibo(n int, out chan<- int) {
    out <- 1

    if n == 1 {
        close(out)
        return
    }

    out <- 1
    if n == 2 {
        close(out)
        return
    }
    a := 1
    b := 1
    for i := 3; i <= n; i++ {
        a, b = b, a+b
        out <- b
    }
    close(out)
}

func main() {
    ch := make(chan int)

    n := 10
    go fibo(n, ch)

    for res := range ch {
        fmt.Println(res)
    }
    fmt.Println("done")
}