Programmer Think

1, This goal Complete all preparations before the core header file, including the creation of a new project from VS2022 to the preparation of the first custom header file. GitHub: https://github.com/ITchujian/StudentManagementSystem_2022_C Note: in order to share the experience of this development, I will put the analysis process and ...

Factory Pattern is one of the most commonly used design patterns in Java. This type of design pattern is a creation pattern, which provides the best way to create objects. In factory mode, when creating objects, we do not expose the creation logic to the client, and point to the newly created objects by using a common interface. introduce In ...

  ##Topic 1 (training) Let the user enter three integers in turn, calculate the minimum value of the three numbers, and print it to the console. ###Training tips 1. How to complete user entry? 2. What knowledge points are needed to find the minimum value? ###Problem solving scheme 1. Use Scanner to complete keyboard entry, and use if Nest ...

1. Review In the previous section, we talked about the shared variables within the thread sharing range. We used a Map(K,V), where key is the thread object being executed, and value stores the variables of thread operation, such as an int type data. We use key to distinguish the variables operated by which object. In this section, we will use ...

Let's first look at the source code of the equals method and hashcode method of the Object class: public native int hashCode(); public boolean equals(Object obj) { return (this == obj); } From the code, we know that the created Object uses the equals method and hashcode method of Object without rewriting. From the source c ...

concept Note: also known as metadata, it provides a formal method for us to add information to the code, so that we can easily use the data at a later time. (in a practical sense, annotation is just a special kind of annotation. If you don't parse its code, it may have no effect.) Tag annotation: there is no annotation defining the element ...

Preface This series is based on black horse videos: java Concurrent Programming I haven't finished yet. Overall, this is the best concurrent programming video I've ever seen. Here are notes based on videos. In the notes below, Java concurrent programming is also interspersed with an explanation of this book 1. Activeness 1. Deadlock ...

Private properties and methods (implementation encapsulation) Python has no strict access control restrictions on class members, which is different from other object-oriented languages. About private properties and private methods The main points are as follows:         1. Generally, we agree that attri ...

day20 Chapter 1 buffer flow 1.1 general Buffer stream, also known as efficient stream, is an enhancement of four basic FileXxx streams, so it is also four streams, classified according to data type: Byte buffer stream: BufferedInputStream, BufferedOutputStreamCharacter buffer stream: BufferedReader,BufferedWriter The basic principle of buff ...

Function creation and call What is a function? A function is code that performs a specific task to accomplish a specific function. Why do I need a function Reuse code, hide implementation details, improve maintainability, improve readability, and facilitate debugging. def function name ([input parameter]): Function body [return xxx] d ...