Spring source code continues to open!
Last article In, brother song shared with you the loading method of configuration files in Spring. If you haven't seen it yet, you must have a look at it first, which will help you better understand this article. Portal: The first part of Spring source code is open and complete! How is the configuration fil ...
Posted by MastahUK on Mon, 22 Jun 2020 05:05:50 +0200
In a 3*3 puzzle, how to spell it with the least steps is a shortest path problem, which can be solved by using BFS. Each node is a state, and then the least steps are obtained. The intermediate state may require encoding or hashing records for each state to be output. This code only solves the problem of minimum steps. In f ...
Posted by Graxeon on Thu, 18 Jun 2020 18:05:58 +0200
About the problem of password encryption, brother song has talked with you before. For reference:
Two ways of password encryption in Spring Boot!
In this article, song introduced two kinds of encryption schemes, but both of them are used independently! Can multiple password encryption schemes exist in the same project at the same time? The an ...
Posted by FlipinMonkeyPie on Thu, 18 Jun 2020 04:58:42 +0200
This article can quickly teach you how to crawl Sina News. I hope this article can help you! If you have any knowledge or suggestions you want to learn, please leave a message to the author~
How to quickly crawl Sina News and save it locally
1, Crawling scene
1. Web loading mode
2. Web page structur ...
Posted by sandrine2411 on Wed, 17 Jun 2020 05:31:34 +0200
On the basis of the Intro to Machine Learning course, it explains how to deal with missing values, non-numeric data, and data leaks.
Lost value handling
Discard columns containing missing values directly
Replace the missing value with the average value (sklearn.impute SimpleInpuer function in)
Posted by landavia on Wed, 17 Jun 2020 05:04:27 +0200
The image above is a replication of all the files of vgg16. The data folder is a test image. This replication only calls another trained model to identify the picture.vgg16.py reproduces the network structure of vgg16 and imports trained model parameters.Utils.pyFor input picture preprocessing program,Nclasses.py Is the label gi ...
Posted by phpnwx on Tue, 16 Jun 2020 02:38:27 +0200
Due to the recent work requirements, the user's loading speed needs to be greatly optimized.Next, I will make a summary from the aspect of network request optimization. 😀
Some pictures are Sprite
Sprite map is also called CSS sprite. It is a kind of CSS image synthesis technology, which can reduce network requests by making multipl ...
Posted by nano on Mon, 15 Jun 2020 09:28:52 +0200
Audio file related knowledge
Features: the best sound quality format, corresponding to PCM coding
Application: multimedia development, preservation of music and audio materials
Features: good sound quality, high com ...
Posted by hiprakhar on Mon, 15 Jun 2020 08:37:16 +0200
Last week, I put my words out. It seems that all my friends are looking forward to it. In fact, SongGe can't wait to start a new series.
However, the current Spring Security series is still in the process of serialization and has not been completed yet. It's a series of events. Keep your spirits up, and then you'll lose three times. It must be ...
Posted by one on Mon, 15 Jun 2020 05:11:04 +0200
IO stream, that is, the technology used to manipulate the content of a File. So before we talk about IO streams, we need to know about the File class.
1, File file class
1. File class introduction
File is used by Java to represent files / folders (directories). Files / folders on the hard disk can b ...
Posted by pendelton on Sun, 14 Jun 2020 09:59:29 +0200