Programmer Think

1.JAVA escape characters -- common escape characters \t: A tab stop to realize the alignment function \n: Line feed \: one\ \: one \': one' \r: A carriage return System.out.println("Digital and efficient office\r information"); \\Information efficient office System.out.println("Digital and efficient office\r\n information"); \\Digita ...

What is a tuple Tuple is a data type similar to list and. They have basically the same characteristics, but they also have many differences. Tuples, like lists, are queues that can store multiple data structuresThe same tuple is also an ordered set with repeatable elements Definition and creation of tuples In Python, tuple represents th ...

What is a list List is a very important data type in Python. Why is it so important? Because in our actual development process, list is a data structure that is often used. It is widely used because it takes up less space and wastes less memory space. A list is a queueIt is not only a collection of various data, but also a data structureA ...

Introduction to HTML The full name of HTML is hypertext markup language, which is a markup language. It includes a series of tags. Through these tags, the document format on the network can be unified, and the scattered Internet resources can be connected into a logical whole. HTML text is a descriptive text composed of HTML commands. H ...

1. Introduction to three major features of object-oriented Python is an object-oriented language. It also supports three major features of object-oriented programming: inheritance, encapsulation (hiding) and polymorphism. Encapsulation (hidden) Hide the properties and implementation details of the object, and only provide necessary method ...

1, Task: The purpose is to extract various commodity information in the network by using java crawler, establish a unified data model to store data, and describe the basic attributes of commodities through the data model. Such as spu, sku, product description, price and other information. At the same time, it is necessary to eliminate unnecess ...

JSON method, toJSON Suppose we have a complex object that we want to convert into a string to send over the network, or just to output it in the log. JSON.stringify JSON (JavaScript Object Notation) is a common format for representing values and objects. stay RFC 4627 It is described in the standard. It was originally created for JavaScript, ...

Since my work mainly focuses on the network subsystem of the kernel, I just came into contact with this module, so I want to sort out the packet receiving process driven by the network card. The following contents are my personal understanding. If there is anything wrong, I hope you can make more corrections and grow up with each other~ In the ...

1. Creation and initialization of one-dimensional array   1.1 creation of array type_t arr_name [const_n]; //type_t is the element type of the index group //const_n is a constant expression that specifies the size of the array //Code 1 int arr1[10]; //Code 2 int count = 10; int arr2[count];//Try to avoid the array length as variable (vari ...

The original text is reproduced from "Liu Yue's technology blog" https://v3u.cn/a_id_207Once upon a time, SVG(Scalable Vector Graphics) vector animation was known as a technology cursed by browsers because of poor hardware support (IE) and endless compatibility tuning (Safari). However, today in 2022, everything is different. It is th ...