What are some examples of using defer in Go?

What are some examples of using defer in Go?

In Go, the defer statement is used to ensure that a function call is performed later in the program's execution. Here are a few examples.

Can you show me a simple code example?

Sure! Here's a simple example:

package main
import "fmt"

func main() {
    defer fmt.Println("World")
    fmt.Println("Hello")
}

In this code, "World" will be printed after "Hello" due to the defer statement.

What happens if I have multiple defer statements?

If you have multiple defer statements, they are executed in LIFO (Last In, First Out) order. For example:

func main() {
    defer fmt.Println("First")
    defer fmt.Println("Second")
    fmt.Println("Third")
}

This will print:

Third
Second
First