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  The static style effect of landing page and home page after landing has been done, without hyperlinks or clicking effect, First on the renderings: Then the green login button can jump to the home page (without checking the account password, you can jump if it is empty): The main purpose is to practice the layout and s ...

Delete all elements in the single-chain list with a value equal to XXX I inadvertently saw an unusual implementation and found it interesting, so I implemented it myself. The code is really simple and clear, and it runs fast! Okay, now think in your mind, how would you do that?It's so simple. After 5 seconds, you think about a solution, and y ...

Pay This document is v2.x version, if you want to find v1.x version document, Click https://github.com/yansongda/pay/tree/v1.x Note: v1.x is incompatible with v2.x version After developing Alipay and WeChat Payments several times, it is natural to have a feeling of disgust and inertia. I want to find the wheel related on the internet, but I ...

1. Preface Device playback module is added later, the core is to play real-time and historical videos by combining rtsp video stream addresses. At present, many manufacturers such as Haikang, the number one on the market support direct rtsp to play a channel video stream and playback a channel video stream through NVR. These formats can be sear ...

0. Preface In the development system, the front and back ends are separated, and the back end generally returns RESTfull API. The front end calls API to build UI, which is separated from each other and completely independent from each other; In the background API, we generally return the result code, prompt information and data, as shown in t ...

yum install -y keepalived Profile on nfs01 [root@nfs01 ~]# cat /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { router_id nfs01 } vrrp_script check_data { script "/server/scripts/data.sh" interval 2 weight 60 } vrrp_instance oldboy { state MASTER interface e ...

catalog kratos micro service framework learning note 1 (kratos demo) kratos Ontology demo kratos micro service framework learning note 1 (kratos demo) Most of the time this year has passed. It's not much more extensive and github. Now the development task is almost completed, which will be easi ...

I'm a stranger to object-oriented Python programming, especially when it comes to multiple inheritance, and it's hard for me to understand the super() function (the new style class). For example, if you have something similar: class First(object): def __init__(self): print "first" class Second(object): def __init__(self): ...

Source code for this article: GitHub. Click here || GitEE. Click here 1. Listener listener 1. Introduction to concepts There are three components of JavaWeb: Servlet, Listener, Filter.A listener is a component that monitors the state changes of related objects in an application. 2. Event Source Object Refers to the object being listened on. ...

Written in front In the last article, I recorded the driver of Kinect2 installed in Ubuntu and the bridge running in ROS. Now I can't wait to run the RGB-D interface under ORB-SLAM2. Modify ORB-SLAM2 After installing the Kinect2 driver, execute: roslaunch kinect_bridge kinect_bridge.launch Then execute the following comm ...