大数据

Mysql-5.7主从部署-yum方式

一、环境准备 # rpm -qa |grep mariadb |xargs yum remove -y # setenforce 0(临时关闭),(selinux配置文件:SELINUX=disabled,需重启生效) # systemctl stop iptables # systemctl st .........

When should I accept a parameter of Iterable vs. Collection in Java?

问题: What are the considerations of using Iterable vs. Collection in Java? 在Java中使用Iterable与Collection是什么? For example, consider implementing a type that.........

覆盖C中的函数调用 - Override a function call in C

问题: I want to override certain function calls to various APIs for the sake of logging the calls, but I also might want to manipulate data before it is sent to the actual func.........

Pytest单元测试框架生成HTML测试报告及优化

一、安装插件 要生成html类型的报告,需要使用pytest-html插件,可以在IDE中安装,也可以在命令行中安装。插件安装 的位置涉及到不同项目的使用,这里不再详述,想了解的可自行查询。 IDE中安装 在File>Settings>Project>Project Interpreter界面,点击 .........

如何解决layui下select组件大数据卡顿问题

事情是这样,前不久接手了一个老版本的项目,从询问过程中得知项目中使用的是layui框架,迫于无奈,只好硬接了。 随着开发有序进行,突然有一天,测试提出了个问题急匆匆的找上我,怎么回事啊.........

Flask,如何返回 ajax 调用的成功状态码 - Flask, how to return a success status code for ajax call

问题: On the server-side, I am just printing out the json-as-dictionary to the console在服务器端,我只是将 json-as-dictionary 打印到控制台 @app.route('/',methods=['GET','POST'.........

HTTP状态504 - HTTP Status 504

问题: I'm getting the following error when my win32 (c#) app is calling web services. 当我的win32(c#)应用程序调用Web服务时,我收到以下错误。 The request failed with HTTP sta.........

如何在R中使用具有缺失值的随机森林? - How to use random forests in R with missing values?

问题: library(randomForest) rf.model <- randomForest(WIN ~ ., data = learn) I would like to fit a random forest model, but I get this error: 我想要一个随机的森林模型,但我得到这.........

tomcat-dbcp vs commons-dbcp - tomcat-dbcp vs commons-dbcp

问题: It seems there is a lot of confusion between these two connection pooling libraries. 这两个连接池库之间似乎存在很多混淆。 What I want to know is which one is better (if a.........

Background images: how to fill whole div if image is small and vice versa

问题: I have three problems: 我有三个问题: When I tried to use a background image in a smaller size div, the div shows only part of image. 当我尝试在较小尺寸的div中使用背景图像.........