Programming VIP

[the external chain image transfer fails. The source station may have an anti-theft chain mechanism. It is recommended to save the image and upload it directly (img-n71fixw8-1619244581160) (C: \ users \ Juan ~ er \ appdata \ roaming \ typora user images \ image-20210410141227980. PNG)] JavaScript Foundation brief introduction history JavaSc ...

Simple use of search In the previous chapter, we introduced the basic use of the document. If you are interested, you can refer to it Introduction to the core concept of elasticSearch (III): addition, deletion, modification and query of documents In this chapter, we will make a simple use of search. 1, Let's delete all the indexes in ...

What is stock selection? Stock selection is an active investment strategy. First, analyze the prospect of a single stock according to some rules or algorithms, and then build a portfolio for long-term holding. Generally, the stocks of the portfolio are required to have low correlation, so as to hedge the systemic risk. Otherwise, when the mark ...

preface Last week, we added a markdown editor to BiShe website. Then at the weekend, I suddenly thought that it would be good to add a function of exporting pdf to the editor (why can't we export pdf for simple books), so I found a PHP plug-in for generating pdf from the Internet, called tcpdf. It's very big, and the example file is close to 1 ...

Original text: https://circuitdigest.com/microcontroller-projects/arduino-piano-with-record-and-playback Arduino based piano with recording and playback function ARDUINO project Pass by** Aswinth Raj **June 12, 2018 Arduino for those who don't have a background in electronics, building things easily is a blessing. It used to be a great pro ...

Transfer from https://gitee.com/zwj946/vue_cropper gitee Study~ <template> <div class="hello"> <div class="before"></div> <iy-button style="margin: 30px auto;" type="error" @click="sureSava">Cutting</iy-button> <div class="container"> <div class="img-container"> < ...

This practical project is based on the dataset of Lending Club [dataset address: https://github.com/H-Freax/lendingclub_analyse/data/ ] This practical project is based on Colab environment brief introduction This practical project of data analysis is divided into two parts. The first part mainly introduces the Baseline method based on Lig ...

I Precision landing overview 1. General UAVs are gradually gaining greater use in production and life. JD's logistics UAVs are expected to solve the problem of the last minute of user express delivery, and the requirements for accurate identification and landing of UAVs are becoming higher and higher. After careful research, I decided to u ...

1. Install Git Go to Git official website( https://git-scm.com/ )Download Git and click exe to install mindlessly. If you want to change the installation path, please follow the principle by yourself. 2. Configure Git Configure your global Git user name and mailbox git config --global user.name "Jajison" git config --global user.email "139 ...

The most elegant way to write a value in a Map that increases or decreases automatically or re operates a value without calling get() and put() I believe you can always meet such needs in the process of development: query a key value in the Map, add one if there is one, and put the new key value as 1 if there is no one (or perform other operat ...