ASP.NET 5 CompilerOptions - languageversion in project.json

Note: [Deprecated Content] This was written while ASP.NET and .NET Core was in beta (around beta5 or beta6). Since then a lot of stuffs have changed and moved around. Stuffs described below may or may not be true for current stable releases of ASP.NET Core. I recommend not to follow along and get confused. Use official configuration documentation that explains it correctly - docs.asp.net ASP.NET 5 removed the web.config XML based configuration files and bring JSON based project.json and other » Read more