Weintend to release .NET 5 in November 2020, with the first preview available in the first half of 2020. It will be supported with future updates to Visual Studio 2019, Visual Studio for Mac and Visual Studio Code.
Mono is the original cross-platform implementation of .NET. It started out as an open-source alternative to .NET Framework and transitioned to targeting mobile devices as iOS and Android devices became popular. Mono is the runtime used as part of Xamarin.
CoreCLR is the runtime used as part of .NET Core. It has been primarily targeted at supporting cloud applications, including the largest services at Microsoft, and now is also being used for Windows desktop, IoT and machine learning applications.
JITs are well suited for long-running cloud and client scenarios. They are able to generate code that targets a specific machine configuration, including specific CPU instructions. A JIT can also re-generate methods at runtime, a technique used to JIT quickly while still having the option to produce a highly-tuned version of the code if this becomes a frequently used method.
Developer tools are another good example where JIT shines, such as with the dotnet watch tool or edit and continue. Tools often require compiling and loading code multiple times in a single process without restarting and need to do it very quickly.
The default experience for most .NET 5 workloads will be using the JIT-based CoreCLR runtime. The two notable exceptions are iOS and client-side Blazor (web assembly) since both require ahead-of-time (AOT) native compilation.
The Mono Project has spent much of its effort focused on mobile and gaming consoles. A key capability and outcome of that project is an AOT compiler for .NET, based on the industry-leading LLVM compiler project. The Mono AOT compiler enables .NET code to be built into a single native code executable that can run on a machine, much like C++ code. AOT-compiled apps can run efficiently in small places, and trades throughput for startup if needed.
The Mono AOT supports both cases. The first type of AOT is required by Apple for iOS and some game consoles, typically for security reasons. The second is the preferred choice since it offers the benefits of AOT without any of its drawbacks.
.NET Native is the AOT compiler we use for Windows UWP applications and is an example of the first type of AOT listed above. With that particular implementation, we limited the .NET APIs and capabilities that you can use. We learned from that experience that AOT solutions need to cover the full spectrum of .NET APIs and patterns.
AOT compilation will remain required for iOS, web assembly and some game consoles. We will make AOT compilation an option for applications that are more appliance-like, that require fast startup and/or low footprint.
Diagnostics capabilities need to be the same across .NET 5, for both functional and performance diagnostics. It is also important to support the same chips and operating systems (with the exception of iOS and web assembly).
We will continue to optimize .NET 5 for each workload and scenario, for whatever makes sense. There will be even greater emphasis on optimizations, particular where multiple workloads have overlapping needs.
All .NET 5 applications will use the CoreFX framework. We will ensure that CoreFX works well in the places it is not used today, which is primarily the Xamarin and client-side Blazor workloads.All .NET 5 applications will be buildable with the .NET CLI, ensuring that you have common command-line tooling across projects.
We met as a technical team in December 2018 in Boston to kick off this project. Design leaders from .NET teams (Mono/Xamarin and .NET Core) and also from Unity presented on various technical capabilities and architectural direction.
Moving to a single .NET implementation raises important questions. What will the target framework be? Will NuGet package compatibility rules be the same? Which workloads should be supported out-of-the-box by the .NET 5 SDK? How does writing code for a specific architecture work? Do we still need .NET Standard? We are working through these issues now and will soon be sharing design docs for you to read and give feedback on.
The .NET 5 project is an important and exciting new direction for .NET. You will see .NET become simpler but also have broader and more expansive capability and utility. All new development and feature capabilities will be part of .NET 5, including new C# versions.
We see a bright future ahead in which you can use the same .NET APIs and languages to target a broad range of application types, operating systems, and chip architectures. It will be easy to make changes to your build configuration to build your applications differently, in Visual Studio, Visual Studio for Mac, Visual Studio Code, Azure DevOps or at the command line.
Agree, WCF requires too much time to support/setup and develop rather than HTTP REST API (I am comparing to Simplify.Web).
If you have a good architecture of your services (like, WCF-lelated layer is not tightly coupled with you business logic), then it is not hard to migrate to any HTTP REST APIs.
Really? What about distributed transactions, service discovery,routing, service announcements?
How about ability to switch your underlying communication channel (TCP, Net Pipes, UDP) without rewriting code? What about ordered message delivery, control over service instantiation, service sessions?
Great news! I got curious about the AOT, F#, and Generics and WebAssembly possibilities. Also would be great to hear news about Universal / Cross-platform XAML that runs on Web, Mobile, Desktop and IoT.
Well, WCF and SOAP may be dead to Microsoft, it is not dead in the enterprises. The standard bodies are still publishing XML standards, which are used to define the communicate contracts for enterprises and governemnt entities.
What is the rational for Microsoft deciding to kill it and force us all to look different strategies to filling the void?
My experience of the various AOTs is that .Net Native/CoreRT is a higher quality AOT framework, so I would think it would be easier to add an interpreter to .Net Native/CoreRT (which is ongoing work) than make Mono AOT robust and efficient.For example @MStrehovsky/fight-the-global-warming-compile-your-c-apps-ahead-of-time-9997e953645b says Mono AOT has 300ms startup time compared with 50ms for CoreRT: a noticeable chunk of slowness for Xamarin apps.
Not porting WebForms is huge mistake that Microsoft and the larger web will regret. It is ensuring that a huge swath of the internet remains stuck on an outdated platform with absolutely no viable upgrade path. One that will eventually become insecure when MS stops issuing patches for .NET Framework.
Other options that were available before are still available to use with their respective subcommands.Separate help for each subcommand is available via the -h or --help option: dotnet new --help lists all supported options for the subcommand.
Additionally, tab completion is now available for dotnet new. It supports completion for installed template names and for the options a selected template provides.To activate tab completion for the .NET SDK, see Enable tab completion.
Starting with .NET SDK 7.0.100, tab completion is available for dotnet new. It supports completion for installed template names, as well as completion for the options a selected template provides.To activate tab completion for the .NET SDK, see Enable tab completion.
You don't have to run dotnet restore because it's run implicitly by all commands that require a restore to occur, such as dotnet new, dotnet build, dotnet run, dotnet test, dotnet publish, and dotnet pack. To disable implicit restore, use the --no-restore option.
The dotnet restore command is still useful in certain scenarios where explicitly restoring makes sense, such as continuous integration builds in Azure DevOps Services or in build systems that need to explicitly control when the restore occurs.
The following table shows the templates that come pre-installed with the .NET SDK. The default language for the template is shown inside the brackets. Click on the short name link to see the specific template options.
Disables checking for template package updates when instantiating a template. Available since .NET SDK 6.0.100.When instantiating the template from a template package that was installed by using dotnet new --install, dotnet new checks if there is an update for the template.Starting with .NET 6, no update checks are done for .NET default templates. To update .NET default templates, install the patch version of the .NET SDK.
The project that the template is added to. This project is used for context evaluation. If not specified, the project in the current or parent directories will be used. Available since .NET SDK 7.0.100.
One way answers your question precisely, but I don't recommend it. The official dockerfile indicates the image uses Debian (I happen to know the code word "stretch" means Debian). That means we can install Node using the Debian package manager:
What I would recommend instead is using 2 different images. Do the Gulp tasks in 1 Pipeline step using a Node image, pass the resulting files as "artifacts", and then perform the .NET work. That might look something like this (don't read too much into the directory structures, change to fit your case):
Note both images are pinned to a version. Major version numbers are breaking changes, so don't undermine the reliability of your build by pointing to "latest". I find minor and bugfix numbers also useful to pin because they can cause more subtle build problems. When you want to bump the version, put it on a branch, make the change, then merge only when you know it works.
Is this answer still valid? I have a configured a similar pipeline but the artifacts from the first node step are not available in the second step which uses dotnet image. Do the images between the steps have to be the same for this to work?
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