Install Xamarin

To use Xamarin on my Mac, visited its store site and installed Visual Studio for Mac. Three applications (Visual Studio, Xamarin Profiler, Xamarin Workbooks) were installed, and moved all of them into one group with the name of Xamarin.
Although I don’t know what Profiler and Workbooks are, I launched Visual Studio.

 Since I’m a beginner, I humbly read the three introduction topics on the left side of the window.

 The first one was the release note. I looked over "Introducing Visual Studio for Mac" linked in the note. Both of C# and F# can be used as programming language, and C# seems to be more popular than F#, so I’d better study C# initially. Unity seems to be supported for game programming, but now, no matter to me.

 The second one was introduction of .NET. I couldn’t understand it well, so skip.

 Clicked the last one, “-> Learn about Mobile Development with Xamarin,” I could see some words such as “Getting Started” and “Build your first App.” It seemed likely to study App development with sample programs.

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Get the Color Code from an Image Pixel

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PCL Storage (1)

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Prolog Interpreter

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Keywords: Xamarin.Forms, Prolog, C#Prolog, CSProlog, PCL Storage, Command Prompt I didn't update this blog for a while, but I came to want to enjoy Prolog programming and I re-started application development.  First of all, I post an application, Prolog Interpreter, that I almost developed before.  The Prolog Interpreter App has been developed with a Xamarin Library, CSProlog, based on the Command Prompt App that I posted before. The source code is here . Since MainPage.xaml, MainPage.xaml.cs, ComInterpreter.cs, CommandExecute.cs, PCLStorage.cs are the same as the ones in Command Prompt App , I skip their description and introduce Prolog.cs beriefly below. I developed Prolog.cs with reference to some sample programs.  Obviously, one of the NuGet packages, CSProlog, are added to this project. Prolog.cs //using System.Text; //#define SystemIO #define PCLStorage // #define iOS using System.Collections.Generic; using System.Linq; #if SystemIO     using Sy
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