A pretty epic video from Scrimba’s Bob Ziroll that you’ll need a lot of coffee to get through, but you get to see the development of a complete app based around React Router, and it’s free. 

Rust has been ranked as one of the most loved languages by developers. In this series, you will learn the fundamentals of Rust development. We'll start by downloading the tools you need to program with Rust, walk through common concepts, and share what's unique about Rust. By the end of this series, you will have enough knowledge to go forth and write your own Rust programs. It's highly recommended that you watch this series if you have prior experience with programming in another language. 

SQL Server 2019 is designed to solve challenges of the modern data professional including:

• Store enterprise data in a data lake and offer SQL and Spark query capability overall data
• Reduce the need for Extract, Transform, and Load (ETL) applications by eliminating data movement
• Integrate and secure machine learning applications with scalable performance
• Reduce the need for application and query changes to gain a boost in performance
• Increase confidential computing of data through hardware enclaves
• Increase application and database uptime and availability through features like ADR (Advanced Database Recovery)
• Extend the power of the T-SQL language in a secure and robust fashion
• Run applications and deploy databases across multiple operating systems and platforms with compatibility
• Reduce the risk of upgrades while using new SQL capabilities when you are ready though inbuilt database compatibility levels 

PersianTools.js is a standalone, library-agnostic JavaScript that enables some of the Persian features for use in the JavaScript. 

This is an interactive book which aims to be the best place on the internet for learning SQL.  

Xamarin.Forms 4.0 is here with an array of new features and capabilities to help you create amazing, multi-experience apps that perform efficiently and look great. Xamarin.Forms 4.0.0 also introduces Shell—a simplified, navigation-aware container that makes it easier to build mobile applications. The upgrade path to 4.0 and Shell is also designed to be as simple as possible. Finally, the latest release adds extended support for faster renderers and a unified image source feature to help you create better apps for your users. 

In Entity Framework 4.1+ we would validate entities before sending them to the database. We don’t perform validation in EF Core, but there is a quick way to add at least some of it back. 

Working as a .NET Professional is a tumultuous rollercoaster ride of emotional highs and crushing lows. It’s likely the same for other communities, with different flavors of success and failures. I have over a decade of .NET development work, and I am here to share some general mantras that have served me well. 

VSTest is a very extensible unit test execution framework.  The base engine, discovers tests and runs them.  It can parallelize across cores, provides process isolation and can integrate with Visual Studio.  It has extensibility for different test frameworks, code coverage, test impact analysis, data collection, test result reporting and much more. 

Based on the above observations, we can conclude that React will be the best framework to learn in 2021, followed by Vue. But there is a high chance of Angular defending second place since it has been there for a longer period of time than Vue, and surely 2021 is not the end of that. So if you are an Angular developer, I suggest you learn React in the upcoming days.