Details of Javax Validation verification architecture
You're still using if else... Check the parameters from the front end? Are you still checking parameters with code? If so, your project verification is not perfect.
Xiaobian here shares the parameter verification through annotation, farewell to if else... The era of!!! This article mainly introduces Javax ValidationI annotation verification ar ...
Added by GM on Sat, 18 Apr 2020 12:53:26 +0300
The 44th blog post of Xiao Liu
Today, I want to have an early rest. There are so many things at home. I really don't want to study hard these days. However, there are so many things waiting to be done by myself. I still can't study at home. Maybe I drink too little chicken soup.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
& ...
Added by Chalks on Tue, 14 Apr 2020 19:10:47 +0300
R-Breaker Strategy for Commodity Futures
1. Summary
The R-Breaker strategy was developed by Richard Saidenberg and published in 1994.After that, it was ranked one of the top 10 most profitable trading strategies by Futures Truth magazine in the United States for 15 consecutive years.Compared with other strategies, R-Breaker is a combination of trend and reversal.Not only can you capt ...
Added by maltech on Thu, 09 Apr 2020 06:00:53 +0300
Use of classes (classes and objects, constructors and destructors)
Recent Studies on Classes and Objects
I'm good at rowing. I didn't listen to classes. It's harmful, so it's a bit cloudy.
So write this blog to understand.
The use of a class is like encapsulating something, defined as a class
The place and structure defined are actually a little similar.
It doesn't feel like much in the algorithm.
Never touc ...
Added by Ting on Sun, 05 Apr 2020 22:59:27 +0300
Interpretation of HashMap source code (1)
1. Preface
. Let's start reading the source code of HashMap.
2. Inheritance and implementation of HashMap classes
public class HashMap ...
Added by Andy-H on Sun, 05 Apr 2020 21:45:04 +0300
ios local various paths, cache, etc
Caching images locally is used in many scenarios. If only storing file information, it is convenient to build a plist file or database to solve the problem, but it is not so convenient to store images in sandbox. Here are two simple ways to save pictures to sandbox.
1, Save the image as a base64 string in the database o ...
Added by yaron on Sun, 05 Apr 2020 13:34:35 +0300
df Command & du command
df command
View the total capacity, used capacity, remaining capacity, etc. of the attached disk, without any parameters, which is displayed by K by default.
[root@centos-01 ~]# df
//file system 1K-block Already used Available used% Mount point
/dev/sda3 29140072 1040404 28099668 4% /
devtmpfs ...
Added by newbiez on Sat, 04 Apr 2020 00:39:09 +0300
Perfect disconnection of css
css perfect break?
——Does not exist. But it can be relatively less tragic.
conclusion
In css, the broken lines of the text are rather pitiful. Finally awesome version of how to operate.
Let's go to hell with word break: break all. This css can't adapt well to Chinese and English and other situations. It ...
Added by sKunKbad on Fri, 03 Apr 2020 15:25:30 +0300
Finding the product and sum of two univariate polynomials (C language)
The design function calculates the product and sum of two univariate polynomials.
Input format:
The input is divided into two lines. Each line gives the number of nonzero terms of polynomials, and then enters a coefficient and index of nonzero terms of polynomials (the absolute value is not more than 1000 integers) in exponential descending ...
Added by Operandi on Thu, 02 Apr 2020 22:22:02 +0300
Example demo: How to simplify the OD security strategy in production?
Pod security policy is critical to enhance K8S cluster security.This article will continue with the previous article on Pod security.
First, it briefly describes how to associate a Pod with a Pod security policy and uses RBAC to show the steps.It then describes how to enable the default PSP in Rancher and create a custom PSP.Finally, a tool wi ...
Added by JeDi58 on Thu, 02 Apr 2020 12:38:22 +0300