Canvas drawing clock (object-oriented version)

Summary After learning the teacher's course, I implemented it once and wrote an object-oriented version. Canvas clock effect function programming Canvas clock effect - object oriented MOOC video tutorial Canvas drawing clock You can also see the codepen effect directly See the Pen <a href="https://codepen.io/xian ...

Posted on Fri, 03 Apr 2020 08:18:15 -0400 by runnee

Shadow of suspension effect by css

Renderings to achieve: Picture.png Implemented Code: -webkit-box-shadow:0px 3px 3px #c8c8c8 ; -moz-box-shadow:0px 3px 3px #c8c8c8 ; box-shadow:0px 3px 3px #c8c8c8 ; Code for the entire page: <!DOCTYPE html > <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> ...

Posted on Fri, 03 Apr 2020 04:48:17 -0400 by trassalg

Delayed Loading in Spring Boot 2.2

1. Preface As our project continues to iterate over beans, initialization can be time consuming at startup.Spring Boot allows delayed initialization of applications, that is, to initialize Spring Bean s as needed, instead of creating all Beans when Spring Boot starts.This reduces the time it takes to start the application.Delayed initializatio ...

Posted on Fri, 03 Apr 2020 03:52:25 -0400 by iamngk

phpspider generates content collection url on the list page

Need to collect some radio related news, Baidu search, the original idea is to go into Netease, or Sohu or other large news platform for search, keyword crawling It turns out that Netease News doesn't have access to search news, and many of the news that Sohu searches out is difficult to filter videos, which is also a little difficult to do L ...

Posted on Thu, 02 Apr 2020 22:20:04 -0400 by icd_lx

AOP In Android (2) - Basic Practice

0. Preface This article is based on the previous one Last article A simple AOP implementation is carried out. Purpose of this paper: Preliminary practice of AOP in android Thanks: Main reference On Android aspect oriented programming (AOP): https://www.jianshu.com/p/aa1112dbebc7 The author's gayhub: https://github.com/GitLqr/Androi ...

Posted on Thu, 02 Apr 2020 19:43:57 -0400 by point86

How to implement transactions in Spring Boot

1. overview We have been using @ Transactional in SpringBoot to do transaction management, but seldom thought about how SpringBoot can achieve transaction management. Today, we start from the source code to see how @ Transactional can achieve transaction management. Finally, we write a similar annotation to help us deepen our understanding by ...

Posted on Thu, 02 Apr 2020 17:44:34 -0400 by ddoc

MIT6.0001 Notes, LECTURE 8:Object Oriented Programming (class, object, method)

This lesson focuses on the concepts of class, object, method. 1. It begins with a description that any data type in python is a class.Any data is an entity of a class.The role of classes is to better abstract the objects described and encapsulate related data and methods.For methods of similar functionality, because they belong to different ...

Posted on Thu, 02 Apr 2020 15:54:26 -0400 by James138

Logue P2455 [SDOI2006] system of linear equations (Gauss elimination)

Title Description The system of linear first-order equations with n-elements is known. Where: n < = 50, coefficient is [b][color=red] integer < = 100 (with negative number), bi value is integer and < 300 (with negative number) (thank you U14968 mmqqdd for the description of the problem) (redbag: is mqd's own =) [/ color][/b] Progr ...

Posted on Thu, 02 Apr 2020 04:11:52 -0400 by hbalagh

HTML game making based on Canvas

Development tools: vs code About Canvas Define Canvas <canvas id="xxx" width="..." height="..." style="border: 2px solid #000;background: #fff;"></canvas> Game examples 1. Jigsaw puzzle 2. Thunderbolt aircraft 3,Flappybird 1, Jigsaw puzzle The game is introduced: the jigsaw game divides a picture into several pieces and randomly scr ...

Posted on Thu, 02 Apr 2020 03:56:20 -0400 by Daguse

Three characteristics of Java object-oriented programming inheritance

Keywords of this paper: Java, object-oriented, three features, inheritanceInheritance is one of the three characteristics of object-oriented programming. Inheritance embodies the idea of object-oriented programming more incisively and vividly. It allows the association between classes. The basic knowledge of classes and objects can enter the ...

Posted on Thu, 02 Apr 2020 01:35:41 -0400 by pythian