Programming VIP

Write before Well, learn GO, so I have this articleBowen is one of the reading notes of GO Language Actual WarMainly related to array knowledge No one in the world is supposed to be nice to you except your parents. Jianlai, Prince of Fire Play Internal implementation and basic functions of arrays Arrays are the basic data structures fo ...

Spring Configuration Data Source Role of data sources (connection pools) Data sources (connection pools) occur to improve program performancePre-instantiate the data source to initialize partial connection resourcesGet from data source when using connection resourcesReturn the connected resource to the data source after useCommon data sources ...

I usually read the source code, but I haven't summarized it systematically, so I'll take this opportunity to sort it out again; Not only the technical details of the source code; In the process from downloading the code to running the source code, there will be knowledge points and technologies we are not involved in or familiar with at every s ...

Personal blog portal, welcome to visit Tree: Definition: a tree has at most one root node. The terminal of each path is called terminal node, also known as leaf node. A node that is neither a root nor a leaf is called an intermediate node, and the line between the node and the node is called an edge. From bottom to top, it is called height * ...

Recently, I bought a new headset. The store attached some non-destructive music resources of director Zhou. After receiving the goods, I couldn't wait to download and audition. I found that these resources were in wav format. After importing the player, the song title, author and album were all unknown. At that time, I wondered whether there wa ...

2. Basic Java syntax 1. Use of Java keywords Definition: a string (word) with special meaning given by the Java language for special purposes Features: all letters in the keyword are lowercase Specific keywords: 2. Reserved word: the current Java version has not been used, but the later version may be used as a keyword. Specific reserved ...

Title: The N numbers 0,1, ····, n-1 are arranged in a circle, starting from the number 0, and the m-th number is deleted from the circle each time (counting from the next number after deletion). Find the last number left in the circle. For example, the five numbers 0, 1, 2, 3 and 4 form a circle. Starting from ...

1. Circular dependency resolution in the case of prototype Bean First of all, Spring will not scan prototype beans in the scanning phase. These prototype beans will be created only when called. List several scenarios for prototype beans to briefly describe: (1) Suppose there are two objects, class A and class B, and both are defined as pro ...

preparation Enterprise wechat administrator account (you can apply for one by yourself) Enterprise account , for testing) Self built application for testing Wechat alarm configuration parameters corpid Each enterprise has a unique corpid. To obtain this information, you can view the "enterprise ID" (with administrator permis ...

1. Tree structure: a tree is a finite set T of n (n > = 0) nodes. When n=0, it is called an empty tree; When n > 0, the set satisfies the following conditions: (1) there must be a specific node called root, which has no direct precursor but 0 or more direct successors. (2) the remaining n-1 nodes can be divided into m (M > = 0) disjoin ...