One to one relationship
There are two ways to implement one-to-one association in Hibernate 5: primary key Association and foreign key Association.
1. Primary key Association
Key point of primary key Association: two associated tables share a primary key value. For example, if a company is registered ...
Posted on Sat, 22 Feb 2020 07:43:52 -0500 by arpowers
1. struct binary data structure
The struct module includes functions that transform byte strings to native Python data types, such as numbers and strings.
1.1 function and Struct class
Struct provides a set of module level functions that handle structure values, as well as a struct class. The format indicator converts from a string format to a ...
Posted on Sat, 22 Feb 2020 06:27:01 -0500 by Dirtbagz89
Special operation flow in IO flow
The special operation flow in IO flow, as the name implies, has its special function;
Standard I / O stream
Standard I / O streams are used for keyboard input and printout; that is, the Scanner class and System.out.println(), which we usually u ...
Posted on Sat, 22 Feb 2020 04:52:10 -0500 by drorgo
This article is based on "Effective Python - 59 effective ways to write high-quality Python code" [U.S.] Brett Slatkin translated the contents of this book, wrote his own insights in some aspects, and excerpted some as reading notes for future encouragement. Invasion and deletion.
Article 31 ...
Posted on Sat, 22 Feb 2020 04:50:46 -0500 by tallberg
taro realizes shopping cart logic
What is taro?
Taro is a multi terminal development solution that follows the React syntax specification.
Nowadays, there are various forms on the market, such as Web, react native, wechat applet and so on. When the business requirements are expressed in different e ...
Posted on Sat, 22 Feb 2020 04:35:58 -0500 by clown[NOR]
Face to face programming: write classes that represent things and scenes in the world, and create objects based on these classes. The created objects are called instantiations.
class Dog(): #The first letter in the class name in Python should be capitalized
def __init__(self, name, age):
#The functions in the class are ...
Posted on Sat, 22 Feb 2020 02:24:29 -0500 by fansphp
Modularization of Nodejs
In the process of our daily web development, modularization can not be lost. Each of them has its own way of implementation. Noejs follows the commonjs specification.
Think of every file as a module
If a module needs to expose some data or functionality for use by other mo ...
Posted on Fri, 21 Feb 2020 19:59:30 -0500 by Skepsis
HTML+JS+CSS to realize student information management system
If you don't speak much, you can directly see the effect. This code is complex. I hope you ca ...
Posted on Fri, 21 Feb 2020 10:23:27 -0500 by Copernicus
Texture can not only define the color of an object, but also store any surface attributes. For example, use a gradient texture to control the diffuse lighting results. You can control the diffuse illumination of an object by using different gradient textures.
Shader "Custom/RampTe ...
Posted on Fri, 21 Feb 2020 08:59:05 -0500 by nick_whitmarsh
After some components are executed, some code execution will be triggered. Details are as follows:
Event: some operations, such as: click, double-click, keyboard pressed, mouse moved.
Event source: component, such as button, text input box, etc
Register listening: combine e ...
Posted on Fri, 21 Feb 2020 08:14:48 -0500 by petersen313