Programmer Think

catalogue thinking Clear logic. menu checkerboard Initialization of two checkerboards Lay thunder mine clearance Judge whether to win or lose text.c implementation game.c implementation game.h implementation Detailed explanation of recursive part thinking Clear logic. For convenience, it is divided into three files: text ...

Hello, I'm glacier~~ Recently, I was working on a search related project and needed to crawl some links on the network to store them in the index library. Although there are many powerful open-source crawlers, I wrote a simple web crawler with a learning attitude in order to understand the principle. Just do it. Let's start! First, introdu ...

Chapter 10 packages and tools Now any small program may contain 10000 functions, but we can't build them one by one. Most of them come from others. These functions are reused in a way similar to packages and modules There are more than 100 go language packages. You can use go list std wc -l to view them in the terminal. Open source packages c ...

Explain Java reflection mechanism in detail Experience the benefits of reflection through cases case US group take away - > payment - either paid with WeChat or paid by Alipay. //Interface maker: meituan takeout public interface Mtwm { //Online payment function: void payOnline(); } public class WeChat implements Mtwm{ @ ...

Basic concepts of Python exception handling prit('hehe') route File "c:\Users\wyw15\Desktop\python code\testpython_5\test.py", line 3, in <module> content prit('hehe') Name: undefined name“ prit" NameError: name 'prit' is not defined This looks like an exception, but it's actually an exception thrown by the program Throw exce ...

Author: Tom bomb architecture Original link: Handwritten a Spring framework with 300 lines of code. Although the sparrow is small, it has five dirty parts - Nuggets This article is excerpted from Spring 5 core principles 1 custom configuration 1.1 configure application Properties file For the convenience of parsing, we use application ...

Analyze problems The following is the flow chart of user name / password authentication built in Spring Security. We can start here: According to the above figure, we can follow suit and customize an authentication process, such as SMS code authentication. In the figure, I have marked the main links involved in the process with different co ...

Introduction to character function + memory function a key Find string length strlen String function with unlimited length strcpy，strcat，strcmp Introduction to string functions with limited length strncpy，strncat，strncmp String lookup strstr，strtok Error message report strerror Memory operation function memcpy，me ...

Java object orientation (2), constructors, static and blocks ​ First of all, let's understand what object-oriented is. Object-oriented is actually a kind of thinking to deal with problems, It's like going to pick up a cup of tea; ​ There are two kinds of thinking, one is object-oriented, the other is process oriented; Process oriented: wh ...

1. Internal class definition Inner class: define a class in another class or a method. Such a class is called inner class. An inner class is also an encapsulation (protection) The internal class is similar to the real-life car and engine, human and heart. be careful: Internal classes and external classes can easily access each other's pri ...