main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import "fmt"
// I didn't talk about this in a lecture
// As a side-note, I wanted to put it here
// Please review it.
var declareMeAgain = 10
func nested() { // block scope starts
// declares the same variable
// they both can exist together
// this one only belongs to this scope
// package's variable is still intact
var declareMeAgain = 5
fmt.Println("inside nested:", declareMeAgain)
} // block scope ends
func main() { // block scope starts
fmt.Println("inside main:", declareMeAgain)
nested()
// package-level declareMeAgain isn't effected
// from the change inside the nested func
fmt.Println("inside main:", declareMeAgain)
} // block scope ends
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