Shadowing constants

---

• constants can be shadowed as well, but it is not a good idea to do so.

examples/const-shadow/const_shadown.go

package main

import (
    "fmt"
)

const pi float32 = 1.1

func main() {
    fmt.Println(pi)

    const pi float32 = 2.2
    fmt.Println(pi)

    {
        pi := 3.3
        fmt.Println(pi)
        pi = 4.4
        fmt.Println(pi)

    }
    fmt.Println(pi)
}

1.1
2.2
3.3
4.4
2.2

It is declared both outside the main function and inside of it.