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Puzzle 25 Explanation: Go iota

Puzzle 25 Explanation: Go iota

Understand how iota works in Go.

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Try it yourself

Try executing the code below to see the result.

Go (1.16.5)
package main
import (
	"fmt"
)
const (
	Read = 1 << iota
	Write
	Execute
)
func main() {
	fmt.Println(Execute)
}

Explanation

In Go, iota is an enumerated type. It can be used inside a const declaration. For each constant in the same group, iota grows by one. If we specify an operation on iota— for ...