// basic exception handling in Go.  At the simplest you do a multiple return
// where one of the returned values indicates an error.  If that is non-nil,
// an error occurred
//
// gtowell
// August 2021

package main

import (
	"errors"
	"fmt"
)

func main() {
	for i := 0; i <= 1; i++ {
		value, err := DoSomething(i == 1)
		if err != nil {
			fmt.Printf("%d %v\n", i, err)
		} else {
			fmt.Printf("%d %v\n", i, value)
		}
	}
}

// returns an error if passed parameter is true.
// ths is really stupid
func DoSomething(vv bool) (string, error) {
	if vv {
		return "", errors.New("some error explanation here")
	} else {
		return "Good times", nil
	}
}