Programmer Group

Catalog I. what is Annotation? II. The role of Annotation 2.1 Annotations used by compilers 2.2. Annotations used in the class file 2.3 Annotations read during runtime Definition of Annotation 3.1 Yuan Annotation 3.2 Summary of Definition Annotations IV. An ...

Recently, in making a module of springboot to download excel files, the downloaded files have been damaged all the time. A lot of solutions can't be found on the internet. The ink has been solved for half a day. The main reason is that the files in springboot's resource directory are automatically compr ...

I. NPOI Component Import Right-click item menu, "Manage NuGet package" Direct search for "NPOI" will appear in the list, download the first installation can be done. After installation, the following items will appear in the project reference II. Basic Use Add reference using NPOI.HPSF; using NPOI.HSSF.UserMod ...

yolo Learning Series (V): K-means Dimensional Clustering Deep learning: teach you to do target detection (YOLO, SSD) video tutorial 1. Dimensional Clustering 1.1 Clustering Purpose Run voc_label.py under Ubuntu system to generate training set and test set list file. Under Windows, there will be c ...

This demo is based on poi encapsulated object annotation import and export, the project framework is spring boot project! Simply explain the knowledge points involved in this demo, hoping to bring convenience to beginners! poi-excel basic operations (tools) Use of custom annotations Definition of global exception capture New features of J ...

When I use android UiAutomator for testing, I find that the use cases often fail because of the slow loading of pages or the large network latency or unexpected circumstances, but they can run successfully when checking. I put forward a need to make the failed use cases run again. After trying, I finally succeed. Using excel as the type of test ...

Get on with the article New features of Java 8 Due to the large size of the previous article, the focus is not clear enough. This article takes out the Date/Time api of java8 to explain separately. The new date and time tools are all in java.time and its subpackages. New Date/Time API Design Principles The Java 8 Period/Time API is JSR-310 The ...

I. Summary of Basic Knowledge 1. Using pandas to read and write Excel files 2. Using pandas to read and write XML files 2. Begin to use your hands and brains 1. Using Python to Read and Write Excel Read, using the ExcelFile() method of the Pandas library. Write, use Code import pandas as pd import ...

1. Construction of Protein Network We used hunam-HIV PPI.csv, a human HIV-related protein interaction data set, to construct this protein interaction network. In R, we can read data from files stored outside the R environment. Data can also be written to files stored and accessed by the operating system. R can read and write various file forma ...

Here we first introduce several coordinate systems: 1.WGS84: International coordinate system, a geodetic coordinate system, is also the coordinate system widely used in GPS Global Satellite Positioning System.2.GCJ02: Mars coordinate system is a coordinate system of Geographic Information System formulated by the State Bureau of Surveying and ...