Very basic command line application error logging in go. Use of a properly configured log.Logger or another logging package is preferable.

gistfile1.txt

package main

import (
	"errors"
	"fmt"
	"os"
)

func handle(err error) {
	if err == nil {
		return
	}
	logError(err)
	os.Exit(1)
}

func logError(err error) {
	fmt.Fprintf(os.Stderr, "create-github-repo: %s\n", err, v...)
}

func handleF(f string, err error, v ...interface{}) {
	if err == nil {
		return
	}
	logErrorF(f, err, v...)
	os.Exit(1)
}

func logErrorF(f string, err error, v ...interface{}) {
	fmt.Fprintf(os.Stderr, "create-github-repo: " + f + "\n", err, v...)
}

func main() {
	var nilError error
	handle(nilError)
	var err error = errors.New("an error occurred")
	handle(err)
}