.NET Core 3 を触ってみた。


.NET Core 3 が preview 5 になったようで、触ってみた。:sunny:


```
$ dotnet --version
3.0.100-preview5-011568
```

どんなテンプレートある？

```
$ dotnet new
```

以下がテンプレート一覧

```
Templates                                         Short Name            Language          Tags
-------------------------------------------------------------------------------------------------------------------------------
Console Application                               console               [C#], F#, VB      Common/Console
Class library                                     classlib              [C#], F#, VB      Common/Library
WPF Application                                   wpf                   [C#]              Common/WPF
Windows Forms (WinForms) Application              winforms              [C#], VB          Common/WinForms
Worker Service                                    worker                [C#]              Common/Worker/Web
Unit Test Project                                 mstest                [C#], F#, VB      Test/MSTest
NUnit 3 Test Project                              nunit                 [C#], F#, VB      Test/NUnit
NUnit 3 Test Item                                 nunit-test            [C#], F#, VB      Test/NUnit
xUnit Test Project                                xunit                 [C#], F#, VB      Test/xUnit
Razor Component                                   razorcomponent        [C#]              Web/ASP.NET
Razor Page                                        page                  [C#]              Web/ASP.NET
MVC ViewImports                                   viewimports           [C#]              Web/ASP.NET
MVC ViewStart                                     viewstart             [C#]              Web/ASP.NET
Blazor (server-side)                              blazorserverside      [C#]              Web/Blazor
ASP.NET Core Empty                                web                   [C#], F#          Web/Empty
ASP.NET Core Web App (Model-View-Controller)      mvc                   [C#], F#          Web/MVC
ASP.NET Core Web App                              webapp                [C#]              Web/MVC/Razor Pages
ASP.NET Core with Angular                         angular               [C#]              Web/MVC/SPA
ASP.NET Core with React.js                        react                 [C#]              Web/MVC/SPA
ASP.NET Core with React.js and Redux              reactredux            [C#]              Web/MVC/SPA
Razor Class Library                               razorclasslib         [C#]              Web/Razor/Library/Razor Class Library
ASP.NET Core Web API                              webapi                [C#], F#          Web/WebAPI
ASP.NET Core gRPC Service                         grpc                  [C#]              Web/gRPC
global.json file                                  globaljson                              Config
NuGet Config                                      nugetconfig                             Config
Dotnet local tool manifest file                   tool-manifest                           Config
Web Config                                        webconfig                               Config
Solution File                                     sln                                     Solution

```

winforms
ってのがあるんだけど、mac では使用できなかった。