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. 

Installing plv8 On All Platforms 

What Is plv8? 

V8 is a JavaScript engine written by Google. plv8, sometimes written as "PL/v8", is a Procedural Language wrapper around V8 that lets you write PostgreSQL stored procedures in JavaScript. 

In this article I will explain some general purpose queries. I think each developer should have knowledge of these queries. These queries are not related to any specific topic of SQL. But knowledge of such queries can solve some complex tasks and may be used in many scenarios, so I decided to write an article on these queries. 

In Visual Studio 2015 Update 2, you’ll notice that we’ve added some enhancements to previous features as well as added some new refactorings. The team focused on improving developer productivity by cutting down time, mouse-clicks, and keystrokes to make the actions you perform every day more efficient 

○ No sorting option, or a good paging story
○ SQL Injection, without any other alternative
○ Hard to deploy and to keep current with your codebase
○ Poor development story & no testing story
○ Poor client API
○ Lots of table scans
○ Limited queries and few optimization options
○ Single document transactions (from the client)
○ No cross collection transations at all
○ Very small document sizes allowed

• Fixed an issue that caused Xamarin.Android projects using the Xamarin.Android.Arch.Work.Runtime NuGet package to fail with "class file for com.google.common.util.concurrent.ListenableFuture not found".
• Fixed Link assemblies causes app crashes if you have an EditText in VS2019 Preview 2
• Fixed error 'Some or all identity references could not be translated' when opening extension manager; fixed failure to persist some IDE settings.
• Fixed Parallel Stacks shows nonsense number of threads
• Fixed After repair, build cmake folder fails with D8050, compile using tasks.vs.json fails with "cl" is not recognized
• Fixed No longer able to group by trait in Test Explorer with VS 2019 Preview
• Fixed Some c++ code analysis warnings are not localized
• Fixed Service Fabric Project not loading
• Now correctly reports $(MSBuildVersion) as 16.2.x, instead of the erroneous 16.200.19.
• Fixed issue causing a random crash after closing GoToAll/Symbol UI.
• Fixed crash during Visual Studio sign-in.
• Fixed an issue where forms previewer on Android frequently stops responding and needs a restart.
• Added iOS Designer Xcode 10.3 support. 

Safari, Firefox, Edge and Chrome are removing support for TLS 1.0 and 1.1 in March of 2020. If you manage websites, this means there’s less than a year to enable TLS 1.2 (and, ideally, 1.3) on your servers, otherwise all major browsers will display error pages, rather than the content your users were expecting to find. 

It's been another great year for new development tools and technologies. Here are some that bring cross-platform development languages or capabilities into Visual Studio. 

.NET 8 Release Candidate 2 (RC2) is now available and includes many great new improvements to ASP.NET Core!

This is the last release candidate that we plan to share before the final .NET 8 release later this year. Most of the planned features and changes for .NET 8 are part of this release candidate and are ready for you to try out. You can find the full list of what’s new in ASP.NET Core in .NET 8 in the docs.