Concept Class: Used to describe a collection of objects with the same properties and methods. It defines the properties and methods common to every object in the collection. Objects are instances of classes. Method: Function defined in the class. Class variables: Class variables are common throughout the instantiated object. Class variables are defined in the […]
Tag: object
The four major streams in Java: [buffer stream] [conversion stream] [object stream] [print stream]
Article directory buffered stream 1 Overview 2. Efficiency test byte buffer stream character buffer stream Conversion flow Character encodings and character sets Character Encoding character set InputStreamReader class Specify encoding to read OutputStreamWriter class Specify encoding to write object stream ObjectOutputStream class Serialization operation ObjectInputStream class print stream This article mainly introduces the basic concepts […]
[C#] Use of Mapster object mapping
Series of articles [C#] Number generator (define order number rules, fixed characters, serial numbers, business order numbers) Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129129787 [C#] Date range generator (start date, end date) Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129040663 [C#] Component development, calling dll component methods Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129492112 [C#] Use of data entity classes Link to […]
How to pack multiple object arrays into Xml (C#, bpel)
Nothing happened these past two days. I took a look at the code of my senior and found that he wrote a more interesting code. I will analyze and record it here. 1. Situation analysis There are five pieces of data in the picture above. To transmit these five pieces of data to the backend, […]
Solve python object is not subscriptable
Table of Contents Solve the problem of Python “object is not subscriptable” reason solution 1. Check the type of object 2. Check whether the object implements the __getitem__() method 3. Check whether the properties of the object are accessed correctly Summarize Application scenario example: processing JSON data Method definition and usage Access elements using subscripts […]
Integer and Object
36.Integer a= 127,Integer b = 127;Integer c= 128,Integer d = >128;, are they equal? the answer is a and b equal, c and d not equal. For basic data types = = ?Compared value For index data types = = ?What’s more important is the address Integer a= 127 This kind of assignment, is it? […]
Visitor Pattern – Manipulate complex object structures
There are many shops in the mall, which are roughly divided into clothing area, dining area and leisure area. Every day, there is an endless stream of people with different roles (workers, students, rich people) visiting the mall. The mall wants to develop a system to simulate the behavior of these people in these stores. […]
A brief analysis of Objective-C Runtime
When I first learned Objective-C, I felt that there were many unfamiliar and strange syntax and features. For example, syntax such as NSObject *obj = [[NSObject alloc] init];; for example, trying to call a function with a null pointer will not cause a crash. It wasn’t until I had the opportunity to learn more about […]
How to manually obtain the IOC container (global context object) in spring/springboot?
IDE: IntelliJ IDEA 2022.2.3 x64 Operating system: win10 x64 bit home edition JDK: 1.8 Article directory Preface 1. How to manually obtain the spring container [ApplicationContext]? Method ①: Get the spring container in the startup class Method ②: Customize the tool class to implement the ServletContextListener interface to obtain the spring container [recommended web project] […]
2023/11/7–C#–The difference between generics and Object types, generic constraints, ArrayList variable array, Dictionary dictionary class in C#….
1. Use of generics Generics is a programming concept that allows you to write code that can handle non-specific data types, thereby improving code reusability and type safety. Generics allow you to write common algorithms, data structures, and methods to adapt to a variety of different data types without having to write specific code for […]