Use event bubbling and event delegation to optimize code - add event problems to child elements

Pure js calendar component learning notes The following records the problems encountered in the process of completing the calendar component in pure js Problems encountered 1. Drop down menu implementation The display of the drop-down menu and the style that will appear after clicking the option box are written in advance For example, t ...

Posted by cretam on Wed, 27 Oct 2021 01:09:36 -0700

STM32 serial communication

catalogue 1, Understand serial communication 1. What is serial communication 2. Serial communication protocol 2, STM32 uses the serial port to send "hello windows" to the host computer 1. Wiring:   2. Code 3. Burn in board 4. Serial port debugging   3, References   1, Understand serial communication   1. What i ...

Posted by kornlord283 on Wed, 27 Oct 2021 01:09:42 -0700

Chained storage of queues --- October 27, 2021

Previous link: Basic concept of queue - 2021.10.8 Chained storage of queues: What is the chained storage of queues? We all know the structural characteristics of the queue in the previous lecture. Can we realize the stack through the linked list, so as to realize the chain storage of the queue. Then let's discuss it together!!! Now let's t ...

Posted by tony_l on Wed, 27 Oct 2021 01:04:56 -0700

Python implementation of CART decision tree algorithm (detailed comments)

1, Introduction to CART decision tree algorithm CART (Classification And Regression Trees) algorithm is a tree construction algorithm, which can be used for both classification tasks and regression. Compared with ID3 and C4.5, which can only be used for discrete data and classification tasks, CART algorithm has a much wider application. It can ...

Posted by elklabone on Wed, 27 Oct 2021 00:59:01 -0700

nginx configuring load balancing

nginx load balancing Based on the existing network structure, load balancing provides a cheap, effective and transparent method to expand the bandwidth of network equipment and servers, increase throughput, strengthen network data processing capacity, and improve network flexibility and availability. With the development of the website a ...

Posted by jredsmyth on Wed, 27 Oct 2021 00:55:29 -0700

Text 3 swordsman - awk

catalogue 1, awk working principle 2, Common built-in variables in awk (can be used directly) 3, Examples 3.1 output text content by line 3.2 output specified line content 3.3 output odd and even lines 3.4 special usage 3.5 how to extract and put it back 3.6 extracting IP address 4, Summary 1, awk working principle   Read the ...

Posted by roby2411 on Wed, 27 Oct 2021 00:16:43 -0700

Function understanding of Python

Function: in short, it is a code block that encapsulates functions. Functions: 1. Structured programming is the most basic encapsulation of code, which generally organizes a piece of code according to function 2. The purpose of encapsulation is to reuse and reduce redundant code 3. The code is more concise, beautiful and readable Function def ...

Posted by ereimber on Tue, 26 Oct 2021 23:51:07 -0700

JVM interview question series: two objects have the same value (x.equals(y) == true), but may hashcodes be different?

Interviewer's investigation point This question is still to investigate the basic knowledge at the JVM level. The interviewer believes that only with solid basic skills can we write code with high robustness and stability. Technical knowledge involved (x.equals(y)==true). This code looks very simple, but it actually involves some underlying ...

Posted by keefe007 on Tue, 26 Oct 2021 23:30:32 -0700

How does Python interact with C code in microphoton

1. Python code and C code character association This section describes how Python characters are associated with C characters (such as module name, class name, variable name, function name, etc.) during module expansion? Take the ADC class name symbol as an example to illustrate the following association process: C code character ADC STATI ...

Posted by StormS on Tue, 26 Oct 2021 23:08:14 -0700

Lite Git (III) - First Commit

Lite Git (III) - First Commit preface This column is called Lite Git. I mainly want to correspond to Pro Git, which is the official guide of Git. If you are interested or want to know more details, please move on Download PDF version from the official website. The purpose of this column is to enable the novice students to master the basic a ...

Posted by matstuff on Tue, 26 Oct 2021 23:01:00 -0700