UPDATE: This question was the subject of my blog on June 8th, 2012. Thanks for the great question! Great question. We debated the issues you raise for a long, long time. We would like to have a data structure that has the following characteristics: Immutable. The form of a tree. Cheap access to parent nodes … Read more
Yes. nameof() is evaluated at compile-time. Looking at the latest version of the specs: The nameof expression is a constant. In all cases, nameof(…) is evaluated at compile-time to produce a string. Its argument is not evaluated at runtime, and is considered unreachable code (however it does not emit an “unreachable code” warning). From nameof … Read more
There is a compiler error, Visual Studio 2015 just does not report the error properly. However, Visual Studio 2013 does: This is answered here: https://stackoverflow.com/a/13568247: In short: Add a reference to Microsoft.CSharp in order to use dynamic like this.
This works in MVC 5 (tested 5.2.3), you just need to add the roslyn code dom Nuget package CodeDOM Providers for .NET Compiler… Replacement CodeDOM providers that use the new .NET Compiler Platform (“Roslyn”) compiler as a service APIs. This provides support for new language features in systems using CodeDOM (e.g. ASP.NET runtime compilation) as … Read more
When using Visual Studio between 2015 and 2022: You can open the Interactive window by navigating to Views > Other Windows > C# Interactive, Then just right click your project and run Initialize Interactive with Project from the context menu. For older versions: To use the C# Interactive Window with your code, ensure you first … Read more
The original C# compiler wasn’t written in C#, it was in C and C++. The new Roslyn compiler was written in C#, but was initially compiled with the old compiler. Once the new compiler was done, it was able to compile its own source code: this is called bootstrapping.
TL; DR run this in the Package Manager Console: Update-Package Microsoft.CodeDom.Providers.DotNetCompilerPlatform -r More information This problem is not related to Visual Studio itself, so answers suggesting adding build steps to copy files over are rather a workaround. Same with adding compiler binaries manually to the project. The Roslyn compiler comes from a NuGet package and … Read more