70 lines
1.2 KiB
Go
70 lines
1.2 KiB
Go
// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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// For more tutorials : https://learngoprogramming.com
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// In-person training : https://www.linkedin.com/in/inancgumus/
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// Follow me on twitter: https://twitter.com/inancgumus
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package main
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import (
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"fmt"
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"time"
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)
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func main() {
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// single()
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// stacked()
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findTheMeaning()
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}
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func findTheMeaningNoDefer() {
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start := time.Now()
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fmt.Printf("%s starts...\n", "findTheMeaning")
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// do some heavy calculation...
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time.Sleep(time.Second * 2)
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fmt.Printf("%s took %v\n", "findTheMeaning", time.Since(start))
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}
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func findTheMeaning() {
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defer measure("findTheMeaning")()
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// do some heavy calculation
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time.Sleep(time.Second * 2)
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}
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func measure(name string) func() {
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start := time.Now()
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fmt.Printf("%s starts...\n", name)
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return func() {
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fmt.Printf("%s took %v\n", name, time.Since(start))
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}
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}
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func stacked() {
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for count := 1; count <= 5; count++ {
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defer fmt.Println(count)
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}
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fmt.Println("the stacked func returns")
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}
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func single() {
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var count int
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// defer func() {
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// fmt.Println(count)
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// }()
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defer fmt.Println(count)
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count++
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// fmt.Println(count)
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// the defer runs here
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// fmt.Println(count)
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}
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