Fight with Programming

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