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解决Electron vue-cli3.0+首次启动巨慢无法加载 vue-devtool 插件

现象 首次启动可能会等待很久,出现以下信息: INFO Launching Electron... Failed to fetch extension, trying 4 more times Failed to fetch extension, trying 3 more times Failed to fetch extension, trying 2 more times 解决方案: 找到background.js,将下面代码注释: // impor

关于MYSQL 死锁的问题 Deadlock found when trying to get lock; try restarting

定时执行的MYSQL 存储过程报错: Deadlock found when trying to get lock; try restarting transaction 这个错误是在MYSQL 的错误日志中看到的, 不知道要从哪里开始入手解决这个问题。 暂时没发现这个错误对业务逻辑有什么影响,求高手指点。 贴出过程代码如下:   DELIMITE

[HPM] Error occurred while trying to proxy request 终端报错

后台报错信息: [HPM] Error occurred while trying to proxy request /aws/compreElement?type=prec&element=sumprec&prectime=1h&time=20211126080000&procode=0&source=1&chinaSour=0 from localhost:8080 to http://12.12.1.19:8114/ (ECONNREFUSED) (h

Laravel 避免 Trying to get property of non-object 错误

阅读目录 场景1. 常规方法是使用 isset 加以判断2. PHP7 可以使用 ?? (NULL 合并操作符)3. Laravel 5.5 及以上可以使用 optional 辅助函数4. 使用 object_get 辅助函数5. 使用 data_get 辅助函数 场景 public function res() { $user = User::where('id',1)->first

A value is trying to be set on a copy of a slice from a DataFrame

  A value is trying to be set on a copy of a slice from a DataFrame df_delta_fred.delta_thk[df_delta_fred.delta_thk < 0] = 0 解决报错: df_delta_fred.loc[(df_delta_fred.delta_thk < 0), 'delta_thk'] = 0  

解决A value is trying to be set on a copy of a slice from a DataFrame警告

这个错误的原因是你修改了DataFrame的值只是一个副表,并没有对原数据进行改动。 https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy 通过官方的手册,你可以知道这个错误的真确写法 正确的做法是找出该数据的行列组成(索引

个人对测试的理解--安全测试

系列文章目录 整理下个人对测试的一些想法和理解,个人之见。 文章目录 系列文章目录整体思路 安全测试权限审查账号管理外部攻击渗透攻击工具NMAPnessusmetasploitOWASP ZAP 漏洞网站简单的应对防火墙账号权限应用注入风险 整体思路 个人粗略地划分系统、应用应用对

suggest

suggest+名词、动名词短语、句子 suggest后面跟的是建议的事情,具有名词的特性。 比如: I suggest this method. I suggest trying once again. I suggest we have dinner now. we have dinner 这个行为说白了还是一件事情。

Machine Learning(1)

Supervised Learning In supervised learning, we are given a data set and already know what our correct output should look like, having the idea that there is a relationship between the input and the output. Supervised learning problems are categorized into

NOTIC: [8] Trying to get property of non-object

 NOTIC: [8] Trying to get property of non-object /home/wwwroot/qwsd/Application/Admin/Controller/ProjectController.class.php 第 29 行.一般错误是查询 没有查询到值 也没有返回值,很多情况是sql的问题,可以直接打印错误排查问题。$result = $db->query($query) or die($db

数据库死锁的问题,Deadlock found when trying to get lock; try restarting transaction at Query.formatError

场景: 应用刚上线排除大批量请求的问题 线上多次出现的Deadlock found when trying to get lock错误 代码: async batchUpdate(skus, { transaction }) { const result = await Promise.all(skus.map(async sku => { const record = await this.app.model.Sku.upsert