The article begins with the official account of "Guo Guo Guo".
JSR-303 is a sub specification of JAVA EE 6, called Bean Validation.
At any time, when you want to deal with the business logic of an application, data validation is something you must consider and face. The ap ...
Posted on Mon, 18 May 2020 23:42:45 -0400 by TobesC
[five minute dotnet] is a blog series that uses your fragmented time to learn and enrich. net knowledge. It contains all aspects that may be involved in the. net system, such as the small details of C, AspnetCore, and. net knowledge in microservices.
In this article, you will Get:
Automatically wrap the data returned by ...
Posted on Sat, 16 May 2020 03:05:41 -0400 by gavinandresen
1, Type alias
TypeScript provides a convenient syntax for setting aliases for type annotations. You can use type SomeName = someValidTypeAnnotation to create aliases, such as:
type Pet = 'cat' | 'dog';
let pet: Pet;
pet = 'cat'; // Ok
pet = 'dog'; // Ok
pet = 'zebra'; // Compiler error
2, Basic knowledge
In order to better underst ...
Posted on Sat, 16 May 2020 00:32:42 -0400 by sickness01
In the introduction to C ා data operation series - 5. EF Core, we simply demonstrate the functions of EF addition, deletion, modification and query through two classes. Careful partners may have looked at the generated DDL SQL statements and found some clues in them. Those who don't look are not in a hurry, so post them.
public class ...
Posted on Fri, 15 May 2020 09:44:19 -0400 by mrvijayakumar
1. Time Semantics in Flink
2. Introduction of EventTime
3. Watermark (Water Level)
3.1 Basic concepts
Features of 3.2 watermark
3.3 Transfer of watermarks
3.4 Introduction of Watermark
Assigner with periodic watermarks
Assigner with punctuated watermarks
IV. Use of EvnetTime in ...
Posted on Thu, 14 May 2020 12:25:44 -0400 by Trevors
Spring implements IOC (inversion of control) through DI (dependency injection). There are three common injection methods: construction method injection, setter injection and annotation based injection.
Construction method injectionConstructor injection: ensures that some necessary properties are set when the bean is instantiated, and that the b ...
Posted on Thu, 14 May 2020 05:49:15 -0400 by woodplease
The concept of Attribute is not redundant here, and I believe developers with a bit of a.NET foundation understand that there are not a few people who have used Attribute, since many frameworks provide custom attributes, such as JsonProperty, JsonIgnore, and so on, in Newtonsoft.JSON.
The.NET framework allows you to create custo ...
Posted on Tue, 12 May 2020 13:27:16 -0400 by cjbeck71081
The life cycle of Bean in ApplicationContext
Here's a picture:
You must have been blinded to see this picture. Don't worry, I'll explain it slowly: from getBean( )To trigger points, the Spring container's Bean life cycle has gone through the life cycle in the figure, which is divided into two classes:
The three steps of the green arrow and ...
Posted on Tue, 12 May 2020 05:48:07 -0400 by widox
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Generally speaking, the basic process of data analysis includes the following steps:
1. Ask ...
Posted on Tue, 12 May 2020 03:52:20 -0400 by BIOSTALL
The auto-configuration classes in SpringBoot have many ConditionalOnClass annotations, and @ConditionalOnClass matches when all classes in the annotation value exist (by trying to load the specified class using the class loader),
What are the principles of these ConditionalOnClass annotations? Before you can understand the principles of the Con ...
Posted on Tue, 12 May 2020 03:50:18 -0400 by I Am Chris