Just explaining closure in go

closure_explained.go

package main

import (
	"fmt"
)

/*
 * What is Closure in go ?
 * Closure is basically one scope enclosing other scopes .
 * What does that mean ?
 * It means that variables declared in the outer scope are accessible in inner scopes
 */

func main() {
	math_multi := outer()
  
	fmt.Printf("The multiplication result of allowing the inner function having access to the outer functions scope is : %d", math_multi())
  
	fmt.Println("\n", "===\t", "\t", "\t", "\t", "This my dear friend's, is closure", "\t", "\t", "\t", "\t ===")
}

func outer() func() int {
	a := 10
  
	return func() int {
		b := 2
		return a * b
    
	}
}