Class relation -- inheritance relation

13. Class relationship -- inheritance relationship 1. Inheritance relationship 1.1 concept of inheritance ·Inheritance mechanism is an indispensable key concept in object-oriented programming, the foundation of code reusability, and the main way to improve the expansibility and maintainabil ...

Posted by heerajee on Fri, 19 Jun 2020 21:41:21 -0700

You could have written less if else

“… He thinks that Blub language is enough, and then his thinking has been assimilated by Blub language "- Paul Graham, hackers and painters > preface I don't like the shuttle if/else statement in business code. It's complex and bloated. At least in terms of aesthetic feeling, swit ...

Posted by webtech123 on Fri, 19 Jun 2020 05:21:57 -0700

Hibernate Validator - object grouping validation (probably the most comprehensive explanation in the old world)

Then I broke it down last time. I didn't see the children's shoes in the first chapter Click here Play back the content of the previous chapter Entity class @Data @AgeSalaryType public class Student { private Long id; @NotBlank(message = "Name cannot be empty") private String name; @ ...

Posted by apol on Fri, 19 Jun 2020 04:52:25 -0700

JavaSE learning notes - Collections, Arrays, other classes

Java learning notes Tools Collections Collection and Collections method Example Arrays method Example analysis Others Date class Calendar Class practice Math class Link: jdk13_API. Tools Collections Collection and Collections The difference between Collection and Collections: Collecti ...

Posted by JackOfBlades on Fri, 19 Jun 2020 03:57:27 -0700

How to use GDAL/OGR to open the vector and output the point data within the rectangle outside each face

How to use GDAL/OGR to open the vector and output the layer data range and each employee feature range 0. Conception 1. arcmap view data attribute information 2. Output the extent of the external rectangle of each data 3. Generate point data according to the outer rectangular range The main purpos ...

Posted by kwong on Fri, 19 Jun 2020 01:22:19 -0700

Bean singleton managed objects and prototype managed objects

Object of single case management When scope = singleton, that is, by default, it is instantiated when the container is started (that is, when the container is instantiated). But we can specify the lazy init = "true" of the bean node to delay the initialization of the bean. In this case, the be ...

Posted by fluvly on Thu, 18 Jun 2020 18:38:31 -0700

jQuery animation Foundation

1. Animation DOM and CSS operation Principle: at a fixed time interval (for example, 0.1 seconds), change the CSS style of DOM elements a little (for example, increase the height and width by 10% respectively) 2. Custom animation animate() can achieve any animation effect. The parameters to be passed ar ...

Posted by Darkness Soul on Thu, 18 Jun 2020 03:12:45 -0700

14--ArrayList related exercises

First question Enter the student information on the keyboard and save it in the set. Cycle entry method: 1: continuous entry, 0: end entry. Define student class, attribute is name, age, use student object to save input data. Use the ArrayList set to save the student object. After entering, traver ...

Posted by LuiePL on Thu, 18 Jun 2020 00:53:45 -0700

[Asp.netCore Series) 10 ActionFilter s

0. Preface In the previous article, we mentioned how to create a UnitOfWork and enable it through the ActionFilter setting.In this post, we'll give you a brief introduction to ActionFilter and how to use it to complement the tool classes in the previous article. 1. Introduction to ActionFilter The full name of ActionFilter is ActionFilterAttrib ...

Posted by blankextacy on Wed, 17 Jun 2020 15:03:01 -0700

LaUI Element--Lebyte Front End

Basic Elements Button usage Set class="layui-btn" to any HTML element to create a base button.Define additional button styles by appending classes in the format layui-btn-{type}. <!--Base button--> <button type="button" class="layui-btn">a standard button</button> <a href="Http://www.layu ...

Posted by fighnight on Wed, 17 Jun 2020 13:42:37 -0700