[Fork] [Fork] | C# Online Compiler

[Fork] [Fork] by James Houx

using System;
using System.Linq;
using System.Collections.Generic;
using System.Threading.Tasks;
using static System.Console;

/* C# Traits  */
/* This is an example of Trait based programming in C#.
	From my recollection and understanding, this is also the pattern employed in Rust.
	
	The pitfall of this in C#, is that you can't access protected members within the drived class. No idea why.
	This means if you want to have default properties, you have to make setters public :(
	Given how well this pattern seems to work for an complicated actor system, I'm willing to accept the public setters.
	For business software, its a hard-pass/no-go.
	*/

	    public interface IFlier
    {
        void TakeFlight() {
            _flightSpeed = 34.2f;
            Console.WriteLine("I'm flying");
        }
        float FlightSpeed => _flightSpeed;
        protected float _flightSpeed {get; set;}

        protected void SetFlightSpeed(float speed) => _flightSpeed = speed;

    }

    public class Bird : IFlier
    {
        /* NOTE: You do not have to define FlightSpeed readonly property here. It is inherited*/

        /* You must explicitly define this and use IFlier on it or the compiler will not
         * allow it because its protected in the interface */
        float IFlier._flightSpeed { get; set; }
    }

    public class RegularPig
    {

    }

    public class FlyingPig : IFlier
    {
        /* Weird quirk. Even though you are REQUIRED to define this here,
         * you can't actually access it in any internal methods. */
        float IFlier._flightSpeed { get; set; }

        /*
        new void TakeFlight()
        {
            _flightSpeed = 3.5f; // <- This would not work.  I don't know why.
            Console.WriteLine("I'm flying");
        }*/
    }


    class Program
    {
        static void Main(string[] args)
        {
            var bird = new Bird();
            var fpig = new FlyingPig();
            var pig = new RegularPig();

            if (bird is IFlier f)
            {
                f.TakeFlight();
                WriteLine($"My Speed: {f.FlightSpeed}");
            }

            if (fpig is IFlier fp)
            {
                fp.TakeFlight();
                WriteLine($"My Speed: {fp.FlightSpeed}");
            }

            if (pig is IFlier p)
            {
                 p.TakeFlight();
                 WriteLine($"My Speed: {p.FlightSpeed}");
            }

            WriteLine("End Program");
        }
    }

​x
 
using System;
using System.Linq;
using System.Collections.Generic;
using System.Threading.Tasks;
using static System.Console;
​
/* C# Traits  */
/* This is an example of Trait based programming in C#.
    From my recollection and understanding, this is also the pattern employed in Rust.
    
    The pitfall of this in C#, is that you can't access protected members within the drived class. No idea why.
    This means if you want to have default properties, you have to make setters public :(
    Given how well this pattern seems to work for an complicated actor system, I'm willing to accept the public setters.
    For business software, its a hard-pass/no-go.
    */
​
        public interface IFlier
    {
        void TakeFlight() {
            _flightSpeed = 34.2f;
            Console.WriteLine("I'm flying");
        }
        float FlightSpeed => _flightSpeed;
        protected float _flightSpeed {get; set;}
​
        protected void SetFlightSpeed(float speed) => _flightSpeed = speed;
​
    }
​
    public class Bird : IFlier
    {
        /* NOTE: You do not have to define FlightSpeed readonly property here. It is inherited*/
​
        /* You must explicitly define this and use IFlier on it or the compiler will not
         * allow it because its protected in the interface */
        float IFlier._flightSpeed { get; set; }
    }
​
    public class RegularPig
    {
​
    }
​
    public class FlyingPig : IFlier
    {
        /* Weird quirk. Even though you are REQUIRED to define this here,
         * you can't actually access it in any internal methods. */
        float IFlier._flightSpeed { get; set; }
​
        /*
        new void TakeFlight()
        {
            _flightSpeed = 3.5f; // <- This would not work.  I don't know why.
            Console.WriteLine("I'm flying");
        }*/
    }
​
​
    class Program
    {
        static void Main(string[] args)
        {
            var bird = new Bird();
            var fpig = new FlyingPig();
            var pig = new RegularPig();
​
            if (bird is IFlier f)
            {
                f.TakeFlight();
                WriteLine($"My Speed: {f.FlightSpeed}");
            }
​
            if (fpig is IFlier fp)
            {
                fp.TakeFlight();
                WriteLine($"My Speed: {fp.FlightSpeed}");
            }
​
            if (pig is IFlier p)
            {
                 p.TakeFlight();
                 WriteLine($"My Speed: {p.FlightSpeed}");
            }
​
            WriteLine("End Program");
        }
    }

Compilation error (line 4, col 7): The type or namespace name 'Json' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 36, col 21): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 51, col 28): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 22, col 26): The name 'JsonSchema' does not exist in the current context
Compilation error (line 36, col 51): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 37, col 25): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 37, col 44): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 39, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 40, col 31): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 43, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 44, col 31): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 51, col 59): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 52, col 15): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 53, col 17): The name 'MetaSchemas' does not exist in the current context
Compilation error (line 56, col 25): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 56, col 44): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 59, col 30): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 60, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 67, col 32): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 68, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 75, col 31): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 76, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 78, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 79, col 25): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 83, col 19): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 83, col 38): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)

Last Run:	10:18:09 pm
Compile:	0.007s
Execute:	0s
Memory:	0b
CPU:	0s

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