Go Brain Teasers

Puzzle 13

Free-Range Integers

range.go

package main

import (
        "fmt"
)

func fibs(n int) chan int {
        ch := make(chan int)

        go func() {
                a, b := 1, 1
                for i := 0; i < n; i++ {
                        ch <- a
                        a, b = b, a+b
                }
        }()

        return ch
}

func main() {
        for i := range fibs(5) {
                fmt.Printf("%d ", i)
        }
        fmt.Println()
}

Guess the Output
	Try to guess what the output is before moving to the next page.

This code will deadlock.

To get a value from a channel, you can either use the receive operator (←ch) or ...