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Mobile applications pay attention to fast speed and good experience. There is a performance problem with the server interface of a project at hand, which needs to be optimized. In many modifications of the interface, the entity adds many fields for intermediate calculation or storage, and finally serializes the returned data with Newtonsoft.Jso ...

We know that the directory structure of Linux is a tree structure, and the top-level directory is the root directory /.Other directories can be added to the tree by mounting and removed by unmounting.Before starting this tutorial, we need to know what absolute paths and relative paths are.Absolute path: The path is written from the root directo ...

nlohmann::json The source code of nlohmann/json is written based on the C++11 standard. The whole source code is a file nlohmann/json.hpp, which is very convenient to reference. About the basic use of nlohmann/json official website( https://github.com/nlohmann/json )There is a more detailed introduction on. I won't repeat it here. This article ...

Process control statement In the process of a program execution, the execution order of each statement has a direct impact on the result of the program. Therefore, we must know the execution process of each statement. Moreover, we often need to control the execution order of statements to achieve the functions we want. Process control statement ...

1. Introduction to attention Attention means attention in Chinese. This mechanism is put into computer vision, which is similar to showing us a picture of a beautiful and handsome man. Where is the person we first pay attention to 😏 Where did you first see 😏 The earliest attention mechanism was applied to computer vision. The mechanis ...

This article introduces several new functions for unicode strings in ES6.String.prototype.codePointAtFunction type:(index?: number)=> number|undefinedcodePointAt is a prototype function that returns the code point value of the character in the string according to the passed in index parameter. This method can recognize 4-byte code points in ...

October 17, 2018 08:50:11adapter patterndefinition You have everything I like Do I have the look you like If not, I'll give you an adapter, okay Convert the interface of a class into another interface that the customer wants. The adapter pattern allows classes that cannot work together because of interface incompatibility to work together& ...

grep is short for "global search regular expression and print out the line", which means to search regular expressions comprehensively and print them out. This command can be used in combination with regular expressions. It is also the most widely used command in linux.The options of grep command are used to supplement the search proc ...

Don't say much about the description. Go directly to the figure above: See the output? Why is the time difference between the first time and the second time so much? Let's think about it together. We can also look at the conclusion first and then look back at the analysis Note: not only the second time, but every time after the first t ...

Original title: Spring certified China Education Management Center - Spring Data MongoDB tutorial 13 (content source: Spring China Education Management Center)18.1.4.Kotlin supportSpring Data tweaks the details of Kotlin to allow objects to be created and changed.Kotlin object creationKotlin class supports instantiation. By default, all classes ...