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Spring Batch 5 : a simple use case with tests
Prerequisites: Basic knowledge on Java, spring batch, spring JPA. You can find the code used in this blog over in this github repository. Spring Batch is a framework in the Spring ecosystem that simplifies the development of batch processing applications. Batch processing involves handling a lot of data at once, often on a scheduled basis.
Discovering the new LINQ methods in C# 9
Hey there! If you're a C# enthusiast like me, you're probably always on the lookout for the latest and greatest features in the language. Well, C# 9 has some fantastic new LINQ (Language Integrated Query) methods that are sure to make your coding life easier and more enjoyable. Let's dive into these new methods: CountBy, AggregateBy, and Index. CountBy: Grouping Made Simple First up, we have the CountBy method.
C# Records
Dotnet Records was introduced in 2020 with C#9 and highlighted a shift to Functional Programming within the language. However, in my experience, they have been under utilised and demoted to the league of DTO's, primitive obsession and anaemic classes. However, when we extending Records, the similarities to classes can mask the reasons for choosing Records. What is a Record? But first, lets identify what a Record is and why I think we are miss-using them.
Different ways to implement Shallow Copy in C#
In C#, reference types are objects that are stored in the heap. When these types are assigned or passed, they share the same memory location. This behavior can lead to unintended consequences, as modifying one reference affects all other references pointing to the same object. In certain scenarios, it may be necessary to create a separate value copy from a reference type to avoid such side effects.
Getting started on Spring boot and MongoDB - Part 2
In the previous article, we worked on creating a new Spring Boot service, setting up MongoDB using Docker, and connecting the Spring Boot application to the MongoDB database. In this article, we'll focus on setting up a basic GET endpoint in our Spring Boot application to read data from the MongoDB instance running on our local machine.
Applying the Data Mapper Pattern in a Customer Relationship Management System
Introduction In the realm of enterprise application development, Martin Fowler's Patterns of Enterprise Application Architecture provides valuable patterns to tackle common challenges. One such pattern, the Data Mapper, effectively separates domain logic from database access, enhancing maintainability and testability. This article presents a real-world example of implementing the Data Mapper pattern within a Customer Management System.
Mastering C# Fundamentals: The Has-A Relationship
Meta Description:Learn about the Has-A relationship in C# through composition. Understand how to model real-world relationships, create an Address class, and link it to an Employee class with step-by-step examples and practice assignments ranging from easy to challenging. In object-oriented programming, we often talk about the relationships between different classes and objects. A common type of relationship is the "Is-A" relationship, which we use to establish inheritance.
Mastering C# Fundamentals: Introduction to Classes
Meta Description: Learn the fundamentals of C# classes with a practical example. Discover how to create and use a real-world Employee class, complete with properties, methods, and constants to encapsulate data and functionality effectively When starting to code, most people begin by working with variables like int a = 3. This is a great introduction to understanding how data is stored and manipulated.
A Modern Way to Create Value Objects to Solve Primitive Obsession in .NET
Primitive obsession is a tendency to use basic data types to represent more complex concepts. It is a common anti-pattern that can lead to unclear code and harder-to-maintain systems. In this blog post, I will explain to you why primitive obsession can lead to problems in your applications and how to address this issue using Value Objects in .NET. On my website: antondevtips.com I share .NET and Architecture best practices. Subscribe to become a better developer.
What is new in C# 7,8,9,10-CSDN博客
目录 What's new in C# 7 C# 7 in Visual Studio 2017 Out Variables Pattern Matching Tuples （System.ValueTuple） Deconstruct解构 Local Functions Ref Returns and Locals Expression Bodied Members Throw Expressions Generated Async Return Types Literal Improvements C# 7.1 in Visual Studio 2017.3 Compilation Issues (how to switch to C#7.1) Async Main Default Expressions Ref Assemblies Infer Tuple Names Pattern-Matching with Generics C# 7.2 in Visual Studio 2017 15.5 Leading Digit Separators 'Private...
Automate Cucumber Data Table: Java Object Mapping
As a Java developer, using Cucumber for Behavior-Driven Development (BDD) can be a great way to ensure that your code meets business requirements by writing tests in plain language. One of the most powerful features of Cucumber is the ability to use Data Tables in feature files. However, manually mapping these tables to Java objects can be repetitive and error-prone. To streamline this process, the library aims to automatically map Cucumber Data Tables to Java objects.
Symfony 7 vs. .NET Core 8 - Controllers
Disclaimer This is a tutorial or a training course. Please don't expect a walk-through tutorial showing how to use ASP.NET Core. It only compares similarities and differences between Symfony and ASP.NET Core. Symfony is taken as a reference point, so if features are only available in .NET Core, they may never get to this post (unless relevant to the comparison). Most of the concepts mentioned in this post will be discussed in more detail later.
GraphQL（9）：Spring Boot集成Graphql简单实例
1 安装插件 我这边使用的是IDEA，需要先按照Graphql插件，步骤如下： （1）打开插件管理 在IDEA中，打开主菜单，选择 "File" -> "Settings" (或者使用快捷键 Ctrl + Alt + S 或 Cmd + ,)，然后在弹出的对话框中选择 "Plugins"。 （2）搜索GraphQL插件 在插件管理器中，你会看到一个搜索框。在搜索框中输入 "GraphQL" 或者其他相关的关键词，然后按下回车键或者点击搜索图标。 （3）安装插件 （4）重启IDEA 安装完成以后重启IDEA 2 新建数据库 脚本如下: CREATE DATABASE IF NOT EXISTS `BOOK_API_DATA`; USE `BOOK_API_DATA`; CREATE TABLE IF NOT EXISTS `Book` ( `id` int(20) NOT NULL AUTO_INCREMENT, `name` varchar(255) DEFAULT NULL, `pageCount` varchar(255) DEFAULT NULL, PRIMARY KEY...
Generate Object Mapping Using MapStruct
Do you need to write a lot of mapping code in order to map between different object models? MapStruct simplifies this task by generating mapping code. In this blog, you will learn some basic features of MapStruct. Enjoy! Introduction In a multi-layered application, one often has to write boilerplate code in order to map different object models. This can be a tedious and an error-prone task. MapStruct simplifies this task by generating the mapping code for you.
A Complete Guide To Implementing GraphQL for Java
"Soon after we open-sourced the DGS framework, we learned about parallel efforts by the Spring team to develop a GraphQL framework for Spring Boot. The Spring GraphQL project was in the early stages at the time and provided a low level of integration with graphql-java. Over the past year, however, Spring GraphQL has matured and is mostly at feature parity with the DGS Framework. We now have 2 competing frameworks that solve the same problems for our users.
Flyway Database Migration From Spring Boot 3
Flyway is a popular open-source tool for managing database migrations. It makes it easy to manage and version control the database schema for your application. Flyway supports almost all popular databases including Oracle, SQL Server, DB2, MySQL, Amazon RDS, Aurora MySQL, MariaDB, PostgreSQL, and more. For the full list of supported databases, you can check the official documentation here. How Flyway Migrations Works Any changes to the database are called migrations.
Unleashing the Power of Java Interfaces
Java interfaces, for a very long time, were just that — interfaces, an anemic set of function prototypes. Even then, there were non-standard uses of interfaces (for example, marker interfaces), but that's it. However, since Java 8, there have been substantial changes in the interfaces. Additions of default and static methods enabled many new possibilities. For example, enabled adding of new functionality to existing interfaces without breaking old code.
How to Handle Null References in the Latest Version of C#
C# 12 has just been released, and it continues the long tradition of improvements in the safety of the language's software design and execution. One of these improvements relates to manipulating null references, a programming concept that many developers don't really love. Using null references in your code can cause all kinds of issues, like exceptions and a lack of information.
Caffeine：为每个元素动态设置过期时间-CSDN博客
Caffeine：为每个元素动态设置过期时间 Caffeine 是一个开源的 Java 缓存库，它提供了一个高效且易于使用的缓存解决方案，可以帮助 Java 开发人员快速实现缓存功能，提升应用程序的性能和响应速度。Caffeine 支持多种缓存策略，并具有高性能、低延迟和低内存占用的特点，是 Java 开发人员在构建高性能应用程序时不可或缺的工具之一。 对于Caffeine的缓存过期设置来说，我们知道有 expireAfterWrite：基于创建时间进行过期处理 expireAfterAccess：基于最后访问时间进行过期处理 expireAfter：基于个性化定制的逻辑来实现过期处理（可以定制基于新增、读取、更新等场景的过期策略，甚至支持为不同记录指定不同过期时间） 在Caffeine缓存创建时，可以使用expireAfterWrite或expireAfterAccess来设置缓存元素的过期时间，但这种过期时间的设置是基于整个缓存的所有元素来说的，即每个元素的过期时间都是这个指定的时间。...
Simplifying Data Entities in Spring Data With Java Records
Join the DZone community and get the full member experience. Join For Free Java developers have been relying on Spring Data for efficient data access. However, with the introduction of Java Records, the way data entities are managed has significantly changed. In this article, we will discuss the integration of Java Records in Spring Data applications.
SpringBoot整合MyBatis-阿里云开发者社区
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MyBatisPlus简单入门-阿里云开发者社区
1、简单介绍MyBatisPlus MyBatisPlus是一个MyBatis的增强工具，在MyBatis的基础上只做增强不做改变，完全去SQL化，封装好了大量的CRUD操作。甚至吧CRUD操作封装到了Service层，可以直接在Controller调用现成的CRUD服务层，极度舒适省心。 局限：只支持简单的CRUD操作，不支持多表操作（join、union、子查询），不支持GroupBy和各种函数。 2 初步使用 新建SpringBoot工程。引入依赖 3、按条件查询 现在希望对id>3的男性员工执行查询和更新删除操作如下： 4、MyBatisPlus模板生成器 虽然MyBatisPlus已经节省了sql编写的大部分工作，但是当面对几十上百个的处理的时候，仍然有大量的类模块要写，其中最大的工作量就是实体类的编写，如果手工还容易出错 所以MyBatis-Plus还推出了代码生成工具https://github.com/baomidou/generator。 在pom.xml文件中添加代码生成工具 编写生成器代码...
[spring] spring jpa - hibernate 名词解释&配置
[spring] spring jpa - hibernate 名词解释&配置 之前过了一遍依赖注入的内容，这次过一下数据相关的部分，完成了这部分内容，下篇就涉及到 API 实现了 操作的部分放到下一篇，本篇主要是概念+配置 整体课程上来说，已经完成了将近 1/3，年底之前应该说可以把 spring boot 相关的内容滚完 在开始用 jpa/hibernate 之前，先开始解释一些名词 MVC MVC 和 spring 没有直接的关联，这是一个更加广泛的，关于 Model-View-Controller 设计模式，其中： Model 代表数据和业务逻辑相关内容，简单的说就是负责和数据库交流，并且进行数据更新的部分 View 渲染层，直接和用户进行互动的部分，包括从后台获取数据，在前台和用户互动，并且获取用户输入，传输到后台 Controller 负责沟通 model 和 view 的桥梁，将从 view 接收到的数据传给 model 进行数据更新，将从 model 获取的数据传给前台进行渲染 一些比较流行的 MVC 框架有 Ruby，Django（python），Spring...
C#8.0本质论第六章--类_Story1419的博客-CSDN博客
C#8.0本质论第六章–类 类可以理解为对象的模板。面向对象编程的一个关键优势就是不必从头创建新程序，而是可以将现有的一系列对象组装到一起。 6.1类的声明和实例化 虽然并非必须，但一般应该将每个类都放到他自己的文件中，用类名对文件进行命名。 虽然有new操作符分配内存，但没有对应的操作符回收内存，具体由垃圾回收器回收。 程序员应将new的作用理解成实例化对象而不是分配内存。在堆和栈上分配对象都支持new操作符，这进一步强调了new不是关于内存分配的，也不是关于是否有必要进行回收的。 6.2实例字段 在面向对象术语中，在类中存储数据的变量称为成员变量，这个术语在C#中很好理解，但更标准更符合规范的术语是字段。 6.2.1声明实例字段 6.2.2访问实例字段 6.3实例方法 6.4使用this关键字 this是隐含的，它返回对象本身的实例。 6.5访问修饰符 封装的另一个重要作用是隐藏对象的数据和行为的内部细节。访问修饰符的作用是提供封装。 6.6属性 6.6.1声明属性...
Spring WebFlux整合R2DBC实现数据库操作（反应式编程系列）
2023-09-21 08:01:27 Spring Data R2DBC的目标是在概念上变得简单。为了实现这一点，它不提供缓存、延迟加载、写后处理或ORM框架的许多其他特性。这使得Spring Data R2DBC成为一个简单、有限、固执己见的对象映射器。 环境：Springboot2.4.12 R2DBC简介 Spring data R2DBC是更大的Spring data 系列的一部分，它使得实现基于R2DBC的存储库变得容易。R2DBC代表反应式关系数据库连接，这是一种使用反应式驱动程序集成SQL数据库的规范。Spring Data R2DBC使用属性的Spring抽象和Repository支持应用于R2DBC。它使得在反应式应用程序堆栈中使用关系数据访问技术构建Spring驱动的应用程序变得更加容易。 Spring Data R2DBC的目标是在概念上变得简单。为了实现这一点，它不提供缓存、延迟加载、写后处理或ORM框架的许多其他特性。这使得Spring Data R2DBC成为一个简单、有限、固执己见的对象映射器。 Spring Data R2DBC允许一种...
Platform Developer I Certification Maintenance (Winter '23)
Learning Objectives After completing this unit, you’ll be able to: Write clear and intentional Apex Assertions. Write Clear and Intentional Apex Assertions Improve the readability of your Apex code by using the assert methods in the new System.Assert class that fit the exact conditions that you’re checking for. We still support the existing System class assert methods. But we also recommend that you start using the new ones soon and that you update your existing code to use them.
MyBatisPlus简单入门_星光下的赶路人star的博客-CSDN博客
MyBatisPlus是一个MyBatis的增强工具，在MyBatis的基础上只做增强不做改变，完全去SQL化，封装好了大量的CRUD操作。甚至吧CRUD操作封装到了Service层，可以直接在Controller调用现成的CRUD服务层，极度舒适省心。 局限：只支持简单的CRUD操作，不支持多表操作（join、union、子查询），不支持GroupBy和各种函数。 2.1 引入依赖 新建SpringBoot工程。引入依赖 <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.4.1</version> </dependency> 2.2 增加符合MyBatisPlus规范的Mapper和Service @Repository public interface EmployeePlusMapper extends BaseMapper<Employee> { } @Service public class...
SpringMVC入门笔记_Mr_Richard的博客-CSDN博客
1. 什么是MVC MVC是一种软件架构的思想，将软件按照模型、视图、控制器来划分 M：Model，模型层，指工程中的JavaBean，作用是处理数据 JavaBean分为两类： 一类称为实体类Bean：专门存储业务数据的，如 Student、User 等 一类称为业务处理 Bean：指 Service 或 Dao 对象，专门用于处理业务逻辑和数据访问。 V：View，视图层，指工程中的html或jsp等页面，作用是与用户进行交互，展示数据 C：Controller，控制层，指工程中的servlet，作用是接收请求和响应浏览器 MVC的工作流程： 用户通过视图层发送请求到服务器，在服务器中请求被Controller接收，Controller调用相应的Model层处理请求，处理完毕将结果返回到Controller，Controller再根据请求处理的结果找到相应的View视图，渲染数据后最终响应给浏览器 2.
【C#/.NET】使用Automapper映射record类型 - 欲东 - 博客园
当使用Automapper进行对象映射时，通常我们会使用POCO（Plain Old CLR Object）类作为源对象和目标对象。然而，自从C# 9引入了record类型，它们提供了更简洁、不可变的对象模型。我已经将项目的所有Dto都是用record类型，但是record类型还是有些需要注意的点，本文将介绍如何使用Automapper将POCO映射成record的对象。 首先，我们需要确保已经安装了Automapper NuGet包。可以通过NuGet包管理器控制台或者Visual Studio的NuGet包管理器来安装 安装完成后，我们可以在项目中引入Automapper的命名空间，以便在代码中使用Automapper相关的功能。 接下来，假设我们有一个POCO类Person，具有以下属性： 现在，我们希望将这个POCO类映射成一个record类型的对象PersonRecord，具有相同的属性： 在使用Automapper之前，我们需要进行一些配置。可以在应用程序的启动代码或启动器类中进行配置。以下是一个简单的配置示例：...
Datafaker 2.0 - DZone
One of the major changes in Datafaker 2.0 is the requirement for Java version 17 as a minimum, similar to popular frameworks such as Spring Boot 3.0. This release of Datafaker brings significant improvements to the library's performance, support of Java Records, the capability to generate larger amounts of test data, and much more. Schemas and Transformers The most common use case for Datafaker is to generate random readable values in Java, such as first names, quotes, or other values.
[学习笔记]解决因C#8.0的语言特性导致EFCore实体类型映射的错误 - 林晓lx - 博客园
今天下午在排查一个EF问题时，遇到了个很隐蔽的坑，特此记录。 问题 使用ef执行Insert对象到某表时报错，此对象的Address为空： 不能将值 NULL 插入列 'Address'，表 'dbo.xxx'；列不允许有 Null 值。INSERT 失败。 检查数据库和迁移文件时发现Address这个字段被意外设置成nullable: false，而其它的字段却正常，按理来说对于string类型的属性，EFCore在codefirst模式下应该映射为可空类型。 代码也确认了实体中不包含[Required]注释，在任何地方也没有出现.IsRequired()的调用。 于是开始排查：手动创建一个空程序集，引用EFCore，从原项目拷贝EF设计时库、DbContext和各实体类，一顿操作后竟然发现在新的程序集中生成的迁移文件是符合预期的。 令人费解，在多次比对代码之后，发现是.csproj文件中的这一行配置导致的 <Nullable>enable</Nullable> 原因分析 C# 8 引入了一项名为可为 null 引用类型 (NRT) 的新功能。官方文档...
Part I: Creating Custom API Endpoints
Part One: SOAP-Based APIs Simple Object Access Protocol (SOAP) is a messaging protocol based on requests and responses using an XML format. Although some legacy systems still use SOAP over SMTP, the transport method typically used for SOAP requests is HTTP. As an API protocol, SOAP is platform-and language-agnostic, allowing for two applications running on completely different systems to communicate with one another.
Confusing .NET Debuggers: Proxy Objects
Home Confusing .NET Debuggers: Proxy Objects Post Cancel Posted Jan 9, 2023 By Washi 18 min read .NET decompilers and debuggers have become very good at helping reverse engineers figure out the inner workings of a program. However, they also make a lot of assumptions that can be used against them. In this post, we will explore a method that can be used to trick the debugger into hiding a lot of important information during a debugging session.
Kotlin vs. Java: All-purpose Uses and Android Apps
It’s true that Java lost the Android battle to Kotlin, which is now Google’s preferred language and therefore better suited to new mobile apps. But both Kotlin and Java offer many strengths as general-purpose languages, and it’s important for developers to understand the language differences, for purposes such as migrating from Java to Kotlin. In this article, we will break down Kotlin’s and Java’s differences and similarities so you can make informed decisions and move seamlessly between the two.
How to Save Data to a CSV File in a C# Application
Readers like you help support MUO. When you make a purchase using links on our site, we may earn an affiliate commission. Share Tweet Share Share Share Get to know CSV files and learn how to create them using C#. Saving data to a file can be a very powerful technique when it comes to data analysis or reporting. If you are creating a C# application, you can create CSV files to save your data in. CSV files are text files that you can store values in.
Java 可选参数完整指南_allway2的博客-CSDN博客
我遇到了很多关于Java 可选参数的问题和讨论！所以我写这篇文章是为了突出和深入介绍用于在 Java 中实现和处理默认参数的所有变通方法。 如果您是想要了解可选参数在 Java 中如何工作的人之一，那么也许这篇文章就是为您编写的！请继续阅读以了解所有详细信息！ 什么是可选参数？ 顾名思义，Java 中的可选参数仅指对于方法调用而言可能是可选的参数！ 它描述了在不指定其定义中使用的某些参数的情况下调用方法的可能性！ 参数是可以传递给方法或函数的变量！当您调用该方法时，您需要确保要传递的参数的类型和顺序必须与方法声明中指定的相匹配！ Java 是否支持可选参数？ 不幸的是，Java 在设计上并不直接支持方法或构造函数中的默认参数，这与 Kotlin 和 Python 等其他语言不同！ 话虽如此，Java 中的所有参数都是必需的！当您想调用一个方法时，您必须指定在其声明中使用的所有参数！ 如何在Java中使参数可选？ 有几种策略和方法可用于模拟和实现 Java 默认参数！ 让我们仔细看看，并一一详细探讨所有这些方法和选项。 方法重载：...
Data Manipulation with Functional Programming and Queries in Ballerina
Attend QCon San Francisco (Oct 24-28) and find practical inspiration from software leaders. Register InfoQ Homepage Articles Data Manipulation with Functional Programming and Queries in Ballerina Aug 11, 2022 14 min read Write for InfoQ Join a community of experts. Increase your visibility.
Getting Started With Basic Bindings in .NET MAUI
Instantly reflecting data changes in our user interface is possible through binding. Let’s see how to bind data in .NET MAUI. Howdy! 🙋♀ It’s a pleasure for me to have you here! 💚 One of the most important features of an application is that it has the ability to dynamically link data to each of our views. This is where data binding comes in—it is the technique of binding properties so that changes to a property are automatically reflected in our UI.
asp.net core EFCore 属性配置与DbContext
前言 Entity Framework (EF) Core 是轻量化、可扩展、开源和跨平台版的常用 Entity Framework 数据访问技术。用于程序中的class类和数据库中的表互相之间建立映射关系。在学习过程中，EFCore中的属性配置显的尤为重要它是学习好asp.net core的基础是配置数据库表结构的重要基石。本篇内容为学习与整理微软文档（MicrosoftDoc）笔者认为重要部分具体内容参见： Microsoft Build 使 .NET 开发人员能够使用 .NET 对象处理数据库。 无需再像通常那样编写大部分数据访问代码。 EF Core 支持多个数据库引擎，可通过名为数据库提供程序的插件库访问许多不同的数据库。 EF Core 提供程序通常跨次要版本工作，但不跨主要版本工作。 例如，针对 EF Core 2.1 发布的提供程序应用于 EF Core 2.2，但不适用于 EF Core 3.0。 1、创建 DbContext 实例 根据上下文跟踪实体实例。 实体将在以下情况下被跟踪 正在从查询返回 正在添加或附加到上下文...
Consume a C++/WinRT Runtime Component in a Win32 Application - Part 1
Introduction Based on C++ Standard 17, C++/WinRT is currently the most modern technology for creating applications (C++) in a Windows environment.
SSM的整合项目（详细）_ssm项目_秃头馒头的博客-CSDN博客
什么是ssm？ ssm表示的是 Spring + SpringMVC + mybatis 的整合项目； SSM框架整合就是分别实现Spring与SpringMVC、Spring与Mybatis的整合，而实现整合的主要工作就是把SpringMVC、Mybatis中的对象配置到Spring容器中，交给Spring来管理。 SSM分层作用 1.SpringMVC：web层，相当于controller（相当于struts的action）主要进行页面的；请求接受与响应。 组件包括：前端控制器，处理器映射器，处理器适配器，视图解析器，处理器Handler，视图View。其中，只有处理器Handler和视图View需要程序员开发。 Spring：IOC容器 DI AOP MyBatis：自动映射结果集 2、SSM 框架对应到 Java EE 三层架构 （1）Web 层：SpringMVC （2）Service 层：Spring （3）DAO 层：MyBatis （1）整合 SpringMVC 框架和 Spring 框架 由于 SpringMVC 和 Spring 同出一源，所以可以无缝集成...
Using Binding Patterns in Ballerina
In the previous article, we discussed the what and how of binding patterns in Ballerina. In this article, we will look into how binding patterns are employed in other language concepts in Ballerina.
Ballerina Swan Lake: 10 Compelling Language Characteristics for Cloud Native Programming
Key Takeaways Newer, purpose-built programming languages can provide novel ways of doing things that can be radically more efficient than what we're used to. If leveraged correctly, using the right language with the right abstractions for your problem itself is a competitive advantage for business. Whether it's with Domain-specific Languages (DSLs) or templates, integration remains too difficult.
Immutability in C#
In software development, an immutable object is one that once created, can't change. Why would you want such an object? To answer that question, it may help to analyze the problems that result from mutating objects. Go back to the basics of what every application does: create, retrieve, update, and delete data (the CRUD operations). The core of any application manipulates objects.
What is Primitive Obsession and How Can we Fix it?
@samwalpoleSam Walpole Fullstack .NET and JavaScript web developer. Coding teacher and advocate What is Primitive Obsession? To start with, primitives are the basic data types available in most languages. These include data types such as strings, numbers (int, floats), and booleans. Primitive obsession is a code smell in which primitive data types are used excessively to represent your data models. The problem with primitives is they are very general.
Clean Code: Method Arguments Must Be Crisp and Encapsulated
While writing methods, please pay close attention to the method arguments. This is the one area where the method assimilates the foreign body into its core body. Foreign material is always dangerous, you do not have any control over it, but as an owner of a method, you can put a defensive mechanism aka validation, or the anti-corruption layer of your method. Tip 1 Always put validation on the input argument, you can use java annotations to do the validation.
Java in Mule for Java Programmers
You have been a Java programmer for many years now, and you want to re-use your technical skills and knowledge in Mule applications. In this article, you will learn the typical use cases where you can directly include Java code in your Mule application. If you are interested to know more about Java and Mule, please join the Boost your Java career with Mule Integration meetup, where you have a chance to receive free professional training and certification.
Introducing C# 9.0
C# 9.0 adds many new features, and focuses on a few themes. C# 9.0 is part of .NET 5, which continues the journey toward a single .NET ecosystem. The new features focus on modern workloads, that is, the software applications and services you're building today. The C# 9.0 compiler ships with the .NET 5.0 SDK.
Java 8 Tutorial
“Java is still not dead—and people are starting to figure that out.” Welcome to my introduction to Java 8. This tutorial guides you step by step through all new language features. Backed by short and simple code samples you’ll learn how to use default interface methods, lambda expressions, method references and repeatable annotations. At the end of the article you’ll be familiar with the most recent API changes like streams, functional interfaces, map extensions and the new Date API.
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