Programmer Group

Closure is a common concept in programming language, but to be honest, the term is a bit obscure. After checking the information on the Internet for half a day, I still don't know what to do. What I wonder is: what kind of problem is this thing used to solve? Or what is his role? First of all, function After consulting many materials, the summa ...

preface As a front-end page and demand shredder, it can achieve limited improvement by repeating the same business requirements in daily work. In order to jump out of this mountain and open up a new vision, I suggest you read the source code of the top open source library on the market. This is a grea ...

Analysis and prediction of Telecom user churn 1, Project background 2, Analysis purpose 3, Data source 4, Ask questions 5, Analysis process 6, Understanding data 1. Feature understanding 2. Import data 3. Data transformation 7, User churn analysis 1. Analysis of loss proportion 2. User attribute a ...

preface As a front-end page and demand shredder, it can achieve limited improvement by repeating the same business requirements in daily work. In order to jump out of this mountain and open up a new vision, I suggest you read the source code of the top open source library on the market. This is a grea ...

Project experience address Free video tutorial Introduction to the game Lucky fruit machine is an arcade game. The game interface is made up of 24 squares, each of which has a different fruit figure and a small lamp. Players use the game currency to select the target they want to bet on. When they press the start button, the small lamp starts ...

Common Styles Typesetting Title Bootstrap, like regular HTML pages, defines headings with labels <h1> to <h6>, except that Bootstrap overrides its default style and works the same as it does in all browsers.In order for Non-heading elements to use the same style as headings, six class names, from.H1 to.H6, have also been deliberate ...

Common styles Typesetting title Bootstrap, like ordinary HTML pages, defines the title with tags from < H1 > to < H6 >. However, bootstrap overrides its default style and displays the same effect in all browsers. In order to make the non heading element and the heading use the same style, six class names of. h1~.h6 are specially def ...

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 ...

“… 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 ...

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; @ ...