Course6516

Course Introduction：AJAX stands for Asynchronous JavaScript And XML, which is asynchronous JS and XML. Through AJAX, you can send asynchronous requests to the server in the browser. The biggest advantage: obtaining data without refreshing. AJAX is not a new programming language, but a new way of using existing standards together.

Course3739

Course Introduction：There are two main purposes for studying this course: 1. Visual panel layout adapts to the screen 2. Use ECharts to realize histogram display Core Technology: -Based on flexible.js + rem smart large screen adaptation - VScode cssrem plug-in - Flex layout - Less to use - Based on ECharts data visualization display - ECharts histogram data settings - ECharts map introduction

Course19661

Course Introduction：Use PDO mode (PHP data object) to connect and select databases (unified operation of various databases), execute SQL statements and process result sets

Course1754

Course Introduction：Python visualization video series using matplotlib, seaborn, pyecharts, combined with real data sets; this video is reproduced from Bilibili: BV1gz411v7F5

Course7440

Course Introduction：Many programmers who have worked for many years still have a very basic understanding of databases. They are confused as soon as they go out for interviews. They don’t understand basic SQL statements, more complex SQL queries, and SQL statement optimization. They don’t even know how to use them. Redis improves system performance and can withstand tens of millions of concurrencies. This set of courses will help you thoroughly understand MySQL locks, execution plans, indexes, MVCC & Redis transactions, cache, breakdown, penetration, avalanche, warm-up, etc., and you can complete all database interviews in one set!

Course Introduction：Redis provides a variety of data reading methods, including: GET (single key value reading), MGET (batch key value reading), HGET (hash table key value reading), HGETALL (hash table all key value reading) Fetch), LRANGE (list range data reading), ZRANGE (ordered set range member reading), ZRANGEBYSCORE (ordered set fractional range member reading). The data read by these methods are all in binary format and need to be converted according to the data type. Non-existing keys return nil.

2024-04-02 comment 0152

Course Introduction：Methods for reading data in PyCharm: Use Pandas to read from a CSV file: Import the Pandas library and use the read_csv() method to read the data. Use NumPy to read from a text file: Import the NumPy library and use the loadtxt() method to read the data.

2024-04-17 comment405

Course Introduction：MATLAB 提供多种数据读取方法：读取文件：使用 load 函数从文本、CSV、Excel 和 MAT 文件中读取数据。连接数据库：使用 database 函数连接到数据库并检索数据。读写网络数据：使用 websave 函数从网页和 JSON 文件中读取数据。其他数据源：还可以读取图像、音频文件和串行端口数据。数据格式：MATLAB 可以处理数值、字符串、细胞数组、结构体和表格等数据格式。

2024-06-09 comment 0173

Course Introduction：PHP 中读取数据的方法包括：从数据库读取：使用 MySQLi 或 PDO 等扩展连接数据库并执行查询。从文件中读取：使用 file_get_contents() 函数读取文件内容。从 Web 服务读取：使用 curl 函数发送 HTTP 请求并获取响应。

2024-08-02 comment721

Course Introduction：The methods for reading data in Python are: reading from a file (open, read, read line by line) reading from a text stream (create, write, reset pointer, read) reading from a CSV file (create read Fetcher, line-by-line reading) Reading from JSON file (loading data) Reading from database (establishing connection, executing query, retrieving data)

2024-04-02 comment 0813