Programmer Think

Introduction: now many people, most of them are only in rough writing, and they don't know how to write with brush. But the yearning for a better life is no less than that of literati. Here programmers write beautiful Spring Festival couplets with the help of code. Now, let's show you how to write Spring Festival couplets in Python. 1. Env ...

1, Branch and loop statements 1. Concept of statement In fact, the sentence concept in C language is similar to that in natural language; It is divided into five categories Control statements in C language can be divided into the following three categories 1. Conditional judgment statements are also called branch statemen ...

This chapter focuses on the use and precautions of library functions dealing with characters and strings The processing of characters and strings in C language is very frequent, However, C language itself has no string type. Strings are usually placed in constant strings or character arrays. String constants apply to string functions that ...

Wedge In the last article, we learned the volatile keyword. In this article, we continue to learn another keyword commonly used in concurrent programming - synchronized. synchronized usage First, let's look at several common ways to use synchronized. Use synchronized(this) to decorate code blocks class SyncThread implements Runnable { ...

Return value Understanding in reality Go to the bank to withdraw money Enter account number when withdrawing money ----- > call method Enter the number of withdrawals ----- > give actual parameters The money given to you by the bank is completed, and the money given to you by the bank is the return value The keyword to be used in th ...

1 download address 2 initial interface 2.1 new project Enter the project name you want 2.2 new interface What is ApiPost ApiPost = interface debugging + rapid generation of interface documents + standardized management of interface documents + Mock API + interface process test. Common interface management schemes API documentati ...

python reserved word Reserved words are keywords, and we cannot use them as any identifier name. Python's standard library provides a keyword module, which can output all keywords of the current version: >>> import keyword >>> keyword.kwlist ['False', 'None', 'True', '__peg_parser__', 'and', 'as', 'assert', 'async', 'await', ...

catalogue introduce Introduction to common usage 1. Definition of set 2. Access to elements in the set container 3. set common function analysis 1)insert() 2)find() 3)erase() 4)size() 5)clear() Common use extend introduce Set is translated into a set, which is an internally ordered container without duplicate elements. In the exa ...

First of all, let's talk about the last test point. It should be noted that the final score is a rounded integer, that is to say, the scores of 98.6 and 98.7 are the same. It's really disgusting and made me work for a long time. 1. All data can be int, and the rounding can be increased by 0.5 and then forcibly converted to int 2. Since th ...

Arthas online analysis, diagnosis and tuning tool In the past, we used to troubleshoot online problems, usually using the jdk's own tuning tools and commands. The most common is the dump online log, which is then downloaded locally and imported into the jvisual VM tool. There are many changes in this operation. The Arhtas tool developed by Ali ...