When is the init() function run?

Question

I\'ve tried to find a precise explanation of what the init() function does in Go. I read what Effective Go says but I was unsure if I understood fully what it s

Answer 1

Here is another example - https://play.golang.org/p/9P-LmSkUMKY

package main

import (
    "fmt"
)

func callOut() int {
    fmt.Println("Outside is beinge executed")
    return 1
}

var test = callOut()

func init() {
    fmt.Println("Init3 is being executed")
}

func init() {
    fmt.Println("Init is being executed")
}

func init() {
    fmt.Println("Init2 is being executed")
}

func main() {
    fmt.Println("Do your thing !")
}

Output of the above program

$ go run init/init.go
Outside is being executed
Init3 is being executed
Init is being executed
Init2 is being executed
Do your thing !