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Links to the original text: http://www.cnblogs.com/David-Huang/p/8758145.html demand Add a drop-down list to the specified column. The following picture: thinking NPOI Document Website can not be accessed, here refers to the POI Docu ...

Reference Blog: https://blog.csdn.net/a_forever_dream/article/details/83654397 https://ouuan.github.io/%E7%BA%BF%E6%80%A7%E5%9F%BA%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/ https://blog.sengxian.com/algorithms/linear-basis     Linear basis properties: 1. Any number in the original sequence can be obtained by some number exclusion in the line ...

1, background When using Prometheus as a monitoring system (java), the general practice is that the system exposes the endpoint URL to prometheus, such as / metrics, and then Prometheus pulls the index data from the url.The main uses are spring-boot-starter-actuator, micrometer-registry-prometheus.But the problem is that the default exposed end ...

For most common applications, there is no need for more than 4 million IDs per second, and the number of machines is less than 1024. So we can improve the method of ID generation by using shorter IDs: 53 bitID is composed of 32 bits second timestamp + 16 bits self-increasing + 5 bits machine identification. It accumulates 32 machines and gener ...

1, background Recently, the company hopes to achieve Android native PDF function, requirements: efficient and practical. After two days of research and coding, a simple Demo is implemented, as shown in the figure above. There are still many technical points about the realization of PDF function in Android's native end. In order to avoid detour ...

I. Environment and Version Linux: centos7 Three Linux Services 192.168.72.129 192.168.72.130 192.168.72.131 Redis: redis-4.0.14 Uploading Redis Software 1. Creating Software Catalogue [root@localhost local]# cd /usr/local/ [root@localhost local]# mkdir mysoft 2. Xftp upload software, decompression [root@localhost mysoft]# cd /usr/local/mysoft/ ...

As we all know, the Go language is a strictly typed language, and when it is developed, it encounters uncertain input parameters. What should we do? The three points here (...) give us great flexibility for programmers, as follows Variable Quantity Parameters of Functions May refer to https://github.com/guyan0319/... Example package main impor ...

How to Improve iOS Development Skills 1. Reading blogs: https://github.com/tangqiaoboy/iOSBlogCN Blog addresses of more than 40 iOS development bloggers 2. Reading: Reading a high-quality iOS development book every year 3. Watch WWDC Video 4. Look at Apple's official documents 5. Look at the code for open source projects 6. Write more code and ...

This series of articles will be sorted out into my Java Interview Guide warehouse on GitHub. For more interesting information, please visit my warehouse. https://github.com/h2pl/Java-Tutorial If you like, please trouble Star, Fork, Watch three Lian ha, thank you for your support. The article was first published on my personal blog: www.how2play ...

html test paper (including latex) downloaded into word   The main objectives are: Share the html format test papers with latex downloaded in word format, and add some flexible typesetting style Receive reviews from the masses and get feedback Cheat for reward, or github star Demand Background: html test paper with latex formula, downl ...