https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/golang/draveness/Recent content in Draveness on 蛇索尼 AidenHugo -- gohugo.iozh-CNshesl-meow@qq.com (佘崧林)shesl-meow@qq.com (佘崧林)Sun, 18 Jul 2021 13:43:33 +0800https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/golang/draveness/%E5%B8%B8%E7%94%A8%E5%85%B3%E9%94%AE%E5%AD%97/Sun, 18 Jul 2021 13:43:33 +0800shesl-meow@qq.com (佘崧林)https://blog.haitai-social.com/note/%E5%B7%A5%E5%85%B7%E4%BD%BF%E7%94%A8%E6%8E%A5%E5%8F%A3/golang/draveness/%E5%B8%B8%E7%94%A8%E5%85%B3%E9%94%AE%E5%AD%97/defer 实例 下面是一个使用 defer 的实例： 1 2 3 4 5 6 7 8 9 10 func createPost(db *gorm.DB) error { tx := db.Begin() defer tx.Rollback() if err := tx.Create(&Post{Author: "Draveness"}).Error; err != nil { return err } return tx.Commit().Error } 可见它的用法是：defer 之后指定的语句