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Sequential structure The basic structure of Java is sequential structure. Unless otherwise specified, it will be executed sentence by sentence in order Sequential structure is the simplest algorithm structure Between statements and between boxes, it is carried out from top to bottom. It is executed by several in turn Select stru ...

Automatic configuration of MockMvc As mentioned above, @ AutoConfigureMockMvc provides the function of automatically configuring MockMvc and instantiating the function of MockMvc The specific code is in Within the MockMvcAutoConfiguration autoconfiguration class in the spring boot test autoconfiguration project. The effectiveness of this auto ...

  1 what is a callback function? First, what is "callback"? My understanding is: pass an executable code to other code like parameter passing, and this code will be called and executed at some time, which is called callback. If the code is executed immediately, it is called synchronous callback. If it is executed later, it is ...

1. Data cleaning 1.1. What is data cleansing Data cleaning – the process of re examining and verifying data to remove duplicate information, correct existing errors, and provide data consistency. From the name of data cleaning, we can see that it is to "wash away" the "dirty", which refers to the last procedure ...

1. Simulated annealing algorithm Simulated annealing algorithm draws lessons from the idea of statistical physics. It is a simple and general heuristic optimization algorithm, and has probabilistic global optimization performance in theory. Therefore, it has been widely used in scientific research and engineering. Annealing is a process in whi ...

Functional programming Function is a kind of encapsulation supported by Python built-in. We can decompose complex tasks into simple tasks by disassembling large pieces of code into functions and calling functions layer by layer. This decomposition can be called process oriented programming. Function is the basic unit of process oriented pr ...

Pdf (Portable Document Format), Chinese name "Portable Document Format", is a file format we often come into contact with. Documents, documents Many are in PDF format. With the advantage of stable format, it enables us to optimally maintain the original color and format in the process of printing, sharing and transmission.   PDF ...

Once the const object is created, its value cannot be changed, so the const variable must be initialized.As long as the value of const is not changed, const variable is the same as other variables const object in multiple files: By default, objects decorated with const are only valid in files. This means that allowing const variables with the ...

JavaScript this keyword In object-oriented languages, this represents a reference to the current object. But in JavaScript, this is not fixed. It will change with the change of execution environment. In a method, this represents the object to which the method belongs.If used alone, this represents a global object.In the function, this repres ...

Chapter 1 Introduction to Scala 1.1 general Scala is a static type programming language that takes Java virtual machine (JVM) as the running environment and combines the best features of object-oriented and functional programming (static languages need to be compiled in advance, such as Java, c, c + +, dynamic languages such as js). 1) Scala ...