IsExternalInit | source code only package which allows you to use C

by manuelroemer C# Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(4)Vulnerabilities Install Support

kandi X-RAY | IsExternalInit Summary

IsExternalInit is a C# library typically used in Retail applications. IsExternalInit has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

:running: Quickstart | :package: NuGet. C# 9 added support for the init and record keywords. When using C# 9 with target frameworks <= .NET 5.0, using these new features is not possible because the compiler is missing the IsExternalInit class, hence making the features unavailable for any target framework prior to .NET 5. Luckily, this problem can be solved by re-declaring the IsExternalInit class as an internal class in your own project. The compiler will use this custom class definition and thus allow you to use both the init keywords and records in any project. This repository hosts the code for the "IsExternalInit" NuGet Package which, when referenced, automatically adds the IsExternalInit class to the referenced project(s). The code for the IsExternalInit class is added at compile time and gets built into the referencing project. This means that the resulting project does not have an explicit dependency on the IsExternalInit package, because the code is not distributed as a standard library. Futhermore, the code only gets added to the project if the IsExternalInit class is not already supported by the target framework. The images below show an example - in the library which targets .NET Standard 2.0 the IsExternalInit class has been added during the compilation. That is not the case for the library targeting .NET 5.0, because it is already present in its BCL. This allows you to easily multi-target your projects without having to change a single line of code.

Support

Quality

Security

License

Reuse

Support

IsExternalInit has a low active ecosystem.

It has 33 star(s) with 1 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

There are 3 open issues and 3 have been closed. On average issues are closed in 5 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of IsExternalInit is current.

Quality

IsExternalInit has no bugs reported.

Security

IsExternalInit has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

IsExternalInit is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

IsExternalInit releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of IsExternalInit

Get all kandi verified functions for this library.

IsExternalInit Key Features

No Key Features are available at this moment for IsExternalInit.

IsExternalInit Examples and Code Snippets

No Code Snippets are available at this moment for IsExternalInit.

Community Discussions

Trending Discussions on IsExternalInit

What happens to the custom attributes on records properties?

Testing C# 9.0 in VS2019 - CS0518 IsExternalInit is not defined or imported ... How do I define/import it?

Predefined type 'System.Runtime.CompilerServices.IsExternalInit' is not defined or imported

How to use C# 9 in Blazor WebAssembly project?

QUESTION

What happens to the custom attributes on records properties?

Asked 2021-Mar-25 at 16:30

I am unsuccessfully trying to get custom attributes of dotnet record properties through the Reflection API! I have annotated properties with a custom attribute, but as I can see in ILDASM no property, nor field, nor method member has that custom attribute. So, what has the compiler done with that annotation?

Simply try it dotnet new classlib and then create a DummyAttribute in the folder such as:

...

ANSWER

Answered 2021-Mar-25 at 16:30

The attribute is applied to the constructor parameter by default. Here's the constructor in the IL:

Source https://stackoverflow.com/questions/66802660

QUESTION

Testing C# 9.0 in VS2019 - CS0518 IsExternalInit is not defined or imported ... How do I define/import it?

Asked 2020-Nov-29 at 17:24

EDIT [Nov 29 2020]: .NET 5.0 is out now, but the solution below is still required if you're targetting .NET Standard 2.1

C# 9.0 is still under development. There are a couple references which lead me to believe it should be testable now (some of it, anyway).

A Microsoft blog by Mr. Awesome himself, introducing the features. https://devblogs.microsoft.com/dotnet/welcome-to-c-9-0/
The language tracking page on github: https://github.com/dotnet/roslyn/blob/master/docs/Language%20Feature%20Status.md

I'm using VS 2019 16.7 Preview 3.1. I've selected the language version as Preview for a project.

Some C# 9 features, I can use. Like: Dictionary Stuff = new()

But using the new init feature gives me this error: Error CS0518 Predefined type 'System.Runtime.CompilerServices.IsExternalInit' is not defined or imported

How do I fix this?

Examples of code causing the error:

...

ANSWER

Answered 2020-Jun-30 at 11:17

This is a bug in the current preview and the latest master branch (June 27). A simple record in sharplab.io creates the same error.

Just add the missing type somewhere in your project

Source https://stackoverflow.com/questions/62648189

QUESTION

Predefined type 'System.Runtime.CompilerServices.IsExternalInit' is not defined or imported

Asked 2020-Nov-16 at 09:37

I have been having this issues while testing the new features of C# 9 with Visual Studio 2019 Preview. I was testing the init setter, but the compiler shows error with the message:

Error CS0518 Predefined type 'System.Runtime.CompilerServices.IsExternalInit' is not defined or imported. Below is the code snippet that I've tried:

...

ANSWER

Answered 2020-Nov-16 at 09:37

This is a small bug in Visual Studio 2019 that hasn't been fixed yet. To solve this, you need to add a dummy class named IsExternalInit with the namespace System.Runtime.CompilerServices anywhere in your project. That will do it.

If writing a library it's best to make this class internal, as otherwise you can end up with two libraries both defining the same type.

Source https://stackoverflow.com/questions/64749385

QUESTION

How to use C# 9 in Blazor WebAssembly project?

Asked 2020-Nov-14 at 20:50

I've created a new Blazor WebAssembly project in Visual Studio which, by default, targets .NET Standard 2.1 and therefore uses C# 8.

I've also written a library written for .NET 5 and used C# 9 in it.

How can I use this library in my Blazor project? I can't reference a .NET 5 library in a .NET Standard 2.1 project.

When I change the target framework of the library to .NET Standard 2.1 I cannot use C# 9 anymore in the library project. When I explicitly set the LangVersion in the csproj to 9.0 all of my record types get compile errors that some predefined type System.Runtime.CompilerServices.IsExternalInit is not defined
When I change the target framework of the Blazor project to .NET 5 and reference a .NET 5 library it doesn't work anymore (start up fails with HTTP Error 500.33 - ANCM Request Handler Load Failure)

...

ANSWER

Answered 2020-Nov-14 at 20:50

If you need to migrate your Blazor WebAssembly project to .NET 5, check this out https://docs.microsoft.com/en-us/aspnet/core/migration/31-to-50?view=aspnetcore-5.0&tabs=visual-studio#update-blazor-webassembly-projects

Source https://stackoverflow.com/questions/64838144

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install IsExternalInit

:warning: Important: You must use a C# version >= 9.0 with the IsExternalInit package - otherwise, your project won't compile.
Reference the package Add the package to your project, for example via: Install-Package IsExternalInit --or-- dotnet add package IsExternalInit
Ensure that the package has been added as a development dependency Open your .csproj file and ensure that the new package reference looks similar to this: <PackageReference Include="IsExternalInit" Version="<YOUR_VERSION>" PrivateAssets="all" />  <PackageReference Include="IsExternalInit" Version="<YOUR_VERSION>"> <PrivateAssets>all</PrivateAssets> <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets> </PackageReference> This is especially important for libraries that are published to NuGet, because without this, the library will have an explicit dependency on the IsExternalInit package.
Build the project Ensure that the project compiles. If a build error occurs, you will most likely have to update the C# language version.

Support

I don't expect this package to require many changes, but if something is not working for you or if you think that the source file should change, feel free to create an issue or Pull Request. I will be happy to discuss and potentially integrate your ideas!.

Find more information at: