// Fig. 22.27: IEquationGeneratorService.cs
// WCF REST service interface to create random equations based on a
// specified operation and difficulty level.
using System.ServiceModel;
using System.ServiceModel.Web;

[ServiceContract]
public interface IEquationGeneratorService
{
   // method to generate a math equation
   [OperationContract]
   [WebGet( UriTemplate = "equation/{operation}/{level}" )]
   Equation GenerateEquation( string operation, string level );
} // end interface IEquationGeneratorService

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