Initial commit

first/explain/scopes/03-nested-scope/main.go

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+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 nope:", 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