Tag:Green hand

  • Big data development – docker – use docker to quickly build a big data environment in 10 minutes


    If you just want to have an environment to test, you only need the following three steps 1.git clone https://github.com/hulichao/docker-bigdata ` 2. Installationdockeranddocker-compose, and thencd docker-bigdata && docker-compose -f docker-compose-dev up -d` ` 3. Start cluster logindockerEnvironment, thensh scripts/start-cluster.sh ,ps: There are many scripts to start and stop the cluster under scripts. Start on demand. […]

  • Algorithm – how to get the maximum profit from stock trading


    As a leek who has earned several months’ salary from sideline business, he obviously has a lot of interest in this kind of problem, but in practice, what he often doesn’t know is the future price of the stock, so he needs to predict. In fact, your firm offer will also affect the stock in […]

  • Algorithm – list operation topic routine


    0. Preface Simple topics, but without practice or recitation, may not be able to write out. In an interview, you often finish them in a short time. You don’t have time to draw pictures and deduce them. These can only be quickly completed in your mind. Sometimes after a long time, you feel that you […]

  • . net core learning notes, components: service registration and discovery


    1. What is a service registry? In learning service registration and discovery, we should first understand what is service registration and discovery. Here I give a very common example in our life – online shopping to briefly illustrate that online shopping is very common in our daily life. In fact, the online shopping (merchant rookie […]

  • Electron download EXE file update


    Electron has its own way to download and update the installation package, but the company requires that the configuration file and download address are inconsistent. As a rookie, I don’t know how to change it, so I can’t succeed. So I download the installation package by myself and start it. //Get and run the EXE […]

  • Recommendation of CTF learning resources


    CTF learning route guidance 1.CTFwiki https://wiki.x10sec.org/ 2. Wiki tutorial (programming learning)https://iowiki.com/ 3. Rookie tutorial (programming learning)https://www.runoob.com/ CTF online tools 1.CTFtools  http://www.ctftools.com/down/?tdsourcetag=s_pctim_aiomsg 2. CTF online toolshttp://ctf.ssleye.com/ 3.BugTool https://tool.bugku.com/ 4. A toolboxhttp://www.atoolbox.net/ 5. SSL certificate online toolhttps://www.chinassl.net/ssltools/index.html 6.JSON http://www.jsons.cn/ 7. GitHub resources (Advanced recommendation)https://github.com/euphrat1ca/security_w1k1 8. How to use pwntoolshttp://docs.pwntools.com/en/stable/index.html CTF range 1. Ctfhub (for beginners)https://www.ctfhub.com/ 2. Attack and defend the worldhttps://adworld.xctf.org.cn/login […]

  • New elements of HTML5


    HTML5 semantics header, section, footer, aside, nav, article, figure { display: block; } nav,header,p,article{ width: 1200px; margin:0 auto; }<br> ul{ height:40px; background-color: #fff; list-style: none; display: inline-block; width: 1200px; padding: 0px; }<br> li{ line-height: 40px; text-align: center; float: left; width: 400px; margin:0 auto; } li:hover{ background: pink; }<br> a{ text-decoration: none; } .post{ border:1px dashed […]

  • Rookie + hologres = intelligent logistics


    Author:Alibaba rookie logistics team(Qu Ji, Xiaojiang, Jiang Jizhong) 1、 Business background Rookie intelligent logistics analysis engine is a logistics query platform based on search architecture. It handles several billion package events every day, and carries most of the processing tasks of rookie logistics data.The intelligent logistics analysis engine integrates all kinds of application scenarios based […]

  • On the length attribute of JS array


    preface A rookie who is learning the front end, although he is a vegetable, he has not given up yet. content   First of all, we all know that every array has a length attribute. This length attribute is generally used as a constraint for loop traversal. Generally, we think it is the number of elements […]

  • Redis — java client jedis


    Redis — java client jedis Blog description The information involved in this article comes from the Internet and personal summary, which means personal learning and experience summary. If there is any infringement, please contact me to delete it. Thank you! brief introduction Jedis: a Java operating redis database tool Rookie tutorial document address How to […]

  • Xiaobai’s regular introduction


    summary As a metalanguage tool, regular is built into various programming languages, especially suitable for text processing, data validation and other fields.Its advantage is that the code is short, the expression is huge, the disadvantage is difficult to read, difficult to understand, almost impossible to debug.As a rookie, I hope to find out the way […]

  • IOS develops a line of code to handle cache calculation and clear cache


    Don’t say much, just code // // gzhCache.h // cache // //Created by Guo Zhihe on May 27, 2020 //All rights reserved // #import NS_ASSUME_NONNULL_BEGIN @interface gzhCache : NSObject ///Calculate cache size +(float)filePath; ///Clean up cache +(void)clearCache; @end NS_ASSUME_NONNULL_END // // gzhCache.m // cache // //Created by Guo Zhihe on May 27, 2020 //All rights […]