• How to change the computer folder name display green or blue to black?


    Filenames are displayed in green or blue, possibly because data encryption is enabled. Qihoo 360 Security Guard V10.0.0.2001 official version type:system security size:70.59MB language:Simplified Chinese time:2015-04-23 check the details 1. First, open the homepage of 360 Security Guard and find "Human services” icon, left-click to open the human service. 2. Then, enter "File names are […]

  • Problems encountered in using Windows


    Screen green, change regeditComputer \hkey_ CURRENT_ USER\Control Panel\ColorsWindow 255 Pandoc usage(running on win terminal) pandoc -s a.tex -o b.docx pandoc -s a.docx -o b.tex Specify italics pandoc test.md -o test2.pdf –pdf-engine=xelatex -V CJKmainfont=”KaiTi”

  • K-nearest neighbor algorithm: a new and necessary algorithm for machine learning


    abstract: k-nearest neighbor (k-NN) algorithm is a supervised machine learning algorithm, also known as k-NN algorithm. It was proposed by cover and Hart in 1968. It can be used to solve classification problems and regression problems. 1. Why learn k-nearest neighbor algorithm K-nearest neighbor algorithm, also known as KNN algorithm, is a very suitable algorithm […]

  • Rust programming video tutorial (Advanced) – 016_ 1 thread introduction


    Video address Headline address:https://www.ixigua.com/i677586170644791348…Station B address:https://www.bilibili.com/video/av81202308/ Source address GitHub address:https://github.com/anonymousGiga/learn_rus… Explanation content Related concepts(1) Process is the smallest unit of resource allocation, and thread is the smallest unit of CPU scheduling.(2) Some common problems when using multithreading: Contention state: multiple threads access data or resources in inconsistent order; Deadlock: two threads wait for each other […]

  • 3D visualization platform of underground utility tunnel in green city


    preface At present, China’s green city construction and development is in full swing. In the face of urban diseases caused by rapid urbanization construction, we need to constantly seek sufficient resources to enrich the city, so as to realize the green and intelligent development of the city, such as the transformation of underground pipe gallery, […]

  • Canvas center rotation, center scaling


    1、 Center rotationeffect: code: var canvas = document.createElement(‘canvas’); canvas.width = 500; canvas.height = 500; canvas.style.backgroundColor = ‘#ddd’; document.body.appendChild(canvas); var ctx = canvas.getContext(‘2d’); var x = 100, y = 100, width = 150, height = 150, angle = 90, Rectcenterpoint = {X: x + width / 2, Y: y + height / 2}; // center point […]

  • 90s quickly know whether your app is safe and compliant!


    Now we almost always have mobile phones and all kinds of apps. What apps do you use most every day? Is it safe? Does it meet the green standard? Is it a green application? How to download or judge green application when installing software? Here, Xiaobian will contribute a few moves, take you into the […]

  • Green FTP client, safe and secure green FTP client


    FTP client refers to the software used to upload and download data between local computer and FTP server. In the daily management and maintenance of the website, FTP client is an indispensable and commonly used management tool, but we must try the safe green FTP client. Here is a green FTP client recommended to you. […]

  • CSS3: Transform causes the fixed positioning of child elements to become absolute positioning


    <!DOCTYPE html> <html> <head> <style> body { Background: ᦇ 60; // orange } .parent { position: fixed; width: 300px; height: 300px; right: 0; top: 0; Background: ා02bd00; // Green transform: translateX(0); } .child { position: fixed; left: 0; right: 0; top: 0; bottom: 0; Background: RGBA (0,0,0,0.2); // black transparent: Mask } </style> </head> <body> […]

  • [handling] how to stack other overlay widgets on a widget


    The original text is here About the author: Jose, who just graduated from University, now leads a team to maintain the material library of flutter,Material is a design system that helps the team build a high-quality user experience. Suppose you have a widget in your UI and you want to overlay a floating widget on […]

  • JS advanced case: verify whether the Chinese name is entered by the user


    Case: verify whether the Chinese name is entered by the user [\u4e00-\u9fa5]   title Please enter your name:* < span style = “background color: f5f5; color: #008000;” > // < / span > < span style = “background color:” #f5f5; color: “#008000;” > is a Chinese name, green, otherwise red</span> <span style=”background-color: #f5f5f5; color: #000000;”> […]

  • OSError: cannot write mode RGBA as JPEG


    captcha.save(‘code.jpg’) reasonRGBA means red, green, blue, alpha color space, alpha refers to transparency. Jpg does not support transparency, so either discard alpha or save as a. PNG file solve Method 1Hide RGB captcha=captcha.convert(‘RGB’) captcha.save(‘code.jpg’) Method 2Save pictures as PNG format directly, support transparency captcha.save(‘code.png’)