Go Brain Teasers

Puzzle 25

You Have My Permission

iota.go

package main

import (
        "fmt"
)

const (
        Read = 1 << iota
        Write
        Execute
)

func main() {
        fmt.Println(Execute)
}

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

This code will print: 4

iota is Go’s version of an enumerated type. It can be used inside a const declaration. iota grows by one for each constant in the same group. If you specify an operation ...