Mapping base classes solution | C# Online Compiler

Mapping base classes solution by JoepGeevers

using System;

public class Program
{
	static void Main()
	{
		MapFrom(new RequestV1
		{
			Name = "Joep Geevers",
			BornAt = new DateTime(1976, 11, 26, 9, 17, 0),
		}).Dump();
		
		MapFrom(new RequestV2
		{
			FirstName = "Joep",
			LastName = "Geevers",
			BornAt = new DateTime(1976, 11, 26, 9, 17, 0),
		}).Dump();
	}

	private static PersonRecord MapFrom(PersonRecord person, RequestBase request)
	{
		person.BornAt = request.BornAt;
		
		return person;
	}

	public static PersonRecord MapFrom(RequestV1 request)
		=> MapFrom(
			new PersonRecord
			{
				Name = request.Name,
			}, request);

	public static PersonRecord MapFrom(RequestV2 request)
		=> MapFrom(
			new PersonRecord
			{
				Name = $"{request.FirstName} {request.LastName}",
			}, request);
}

public class RequestV1 : RequestBase
{
	public string Name { get; set; }
}

public class RequestV2 : RequestBase
{
	public string FirstName { get; set; }

	public string LastName { get; set; }
}

public abstract class RequestBase
{
	public DateTime BornAt { get; set; }
}

public class PersonRecord
{
	public string Name { get; set; }

	public DateTime BornAt { get; set; }
}

​x
 
using System;
​
public class Program
{
    static void Main()
    {
        MapFrom(new RequestV1
        {
            Name = "Joep Geevers",
            BornAt = new DateTime(1976, 11, 26, 9, 17, 0),
        }).Dump();
        
        MapFrom(new RequestV2
        {
            FirstName = "Joep",
            LastName = "Geevers",
            BornAt = new DateTime(1976, 11, 26, 9, 17, 0),
        }).Dump();
    }
​
    private static PersonRecord MapFrom(PersonRecord person, RequestBase request)
    {
        person.BornAt = request.BornAt;
        
        return person;
    }
​
    public static PersonRecord MapFrom(RequestV1 request)
        => MapFrom(
            new PersonRecord
            {
                Name = request.Name,
            }, request);
​
    public static PersonRecord MapFrom(RequestV2 request)
        => MapFrom(
            new PersonRecord
            {
                Name = $"{request.FirstName} {request.LastName}",
            }, request);
}
​
public class RequestV1 : RequestBase
{
    public string Name { get; set; }
}
​
public class RequestV2 : RequestBase
{
    public string FirstName { get; set; }
​
    public string LastName { get; set; }
}
​
public abstract class RequestBase
{
    public DateTime BornAt { get; set; }
}
​
public class PersonRecord
{
    public string Name { get; set; }
​
    public DateTime BornAt { get; set; }
}

Compilation error (line 43, col 4): } expected
Compilation error (line 14, col 9): System.Void cannot be used from C# -- use typeof(void) to get the void type object
Compilation error (line 14, col 14): 'Program.agenda.indentity()': not all code paths return a value
Compilation error (line 33, col 12): 'Program.agenda' does not contain a definition for 'identity' and no accessible extension method 'identity' accepting a first argument of type 'Program.agenda' could be found (are you missing a using directive or an assembly reference?)
Compilation error (line 22, col 23): Field 'Program.detailActivity.description' is never assigned to, and will always have its default value null

Last Run:	4:41:01 am
Compile:	0.03s
Execute:	0s
Memory:	0b
CPU:	0s

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