How do I work with constants and iota in Go?

Working with Constants and iota in Go

In Go, constants are declared using the `const` keyword and are similar to variables, but their values cannot be changed. The `iota` identifier simplifies the creation of incrementing numbers for constants. Each time the `iota` keyword is used in a constant declaration, it increments by one, starting from zero. This feature is especially useful for defining enumerated constants.

Here’s an example demonstrating how to use constants and `iota`:


    const (
        a = iota  // 0
        b         // 1
        c         // 2
        d         // 3
    )

    func main() {
        fmt.Println(a, b, c, d) // Output: 0 1 2 3
    }