iterate over characters in a string

---

examples/loop-string/loop_string.go

package main

import (
    "fmt"
)

func main() {
    text := "Hello World!"
    text = "שלום"
    text = "Gábor Szabó"
    text = "lò mañana 😈 mas"
    text = "¿Còmo estas?"
    fmt.Println(text)

    for i, chr := range text {
        fmt.Printf("index: %2v  chr: %c\n", i, chr)
    }
}