Graphical User Interface and Game Development GUI based on tkinter module GUI is the abbreviation of Graphical User Interface. Anyone who has used a computer should be familiar with the graphical user interface, so there is no need to go into details here. Python’s default GUI development module is tkinter (named Tkinter in versions before […]
Tag: ace
Excel in the workplace: Get rid of manual counting and use it to increase work efficiency 10 times
In the workplace, we often have the need to count data based on specific conditions. For example, counting the number of people in a certain department, or judging whether records that meet the conditions exist in the data table. At this time, the countif function is simply not easy to use. So, today I will […]
Replace for loops and make Python code more pythonic!
Text | Parson Sauce Source: Python Technology Why challenge yourself not to write a for loop in your code? Because this forces you to learn to use more advanced and more idiomatic syntax or libraries. The article uses python as an example to talk about a lot of syntax that everyone has seen in other […]
Source code and analysis of specific implementation of Set interface
The author was asked this question when participating in an interview at a bank. Have you ever understood the implementation principle of HashSet? Since this small point is only used normally, but the source code has never been seen, so I can only be “short of money”. (Take openjdk-19 as an example) Source code First […]
Pyqt5 dynamic startup interface
This article will introduce a Python program built using the PyQt5 library, which is mainly used to display the startup interface, connect to services in the background, and display the connection status. The program includes a startup interface, background data loading worker thread, and main interface. It achieves a smooth user experience by using the […]
[JUC] 1. synchronized keyword and Lock interface
Article directory 1. JUC 2. Processes and threads 3. Concurrency and parallelism 4. User thread and daemon thread 5. Object locks and class locks 6. Synchronized keyword 7. synchronized case 8. Lock interface 1.JUC JUC, the java.util.concurrent toolkit for processing threads, started with JDK1.5, and has three packages: Basic package Atomic package Lock bag 2. […]
[Linux] Stop 16: Process Address Space
Article directory 1. Program address space 1. Memory distribution 2. Why is it not released after static modification? 3. A strange phenomenon 2. Process address space 1. The reason for the previous phenomenon 2. What exactly is an address space? 3. Why is there a process address space? 4.Page table 5. What is process? 6. […]
Resources interface and implementation class
Spring Resources Overview Java’s standard iava.net.URL class and standard handlers for various URL prefixes cannot satisfy all access to low-evel resources, such as: There is no standardized URL implementation available for accessing resources that need to be obtained from the classpath or relative to the ServletContext . And it lacks some functions required by Spring, […]
MySQL face vector, Euclidean distance similarity query
Foreword For example, the title uses the extracted face feature vector to write a Euclidean SQL statement to query the top_K data records with the highest similarity in the database. Although the approach is alternative, there is a ready-made facial retrieval API on the market at the business layer, and there is now a vector […]
Uninstall the local development environment and embrace containerized development
When I was at the company, I used the containerized environment prepared by my colleagues to develop directly in Docker. It was so cool. It was also at that time that I learned about containerized development. Unfortunately, that environment is no longer available. So I plan to set up a personal development environment locally, but […]