C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
					
public class Program
{
	public static void Main()
	{
		var test = (IWrapper<int>)Either<int>.Of(1); 
		var t2 = test.Select(i => i*2); 
		var val = t2.Chain(b => b*b); 
		var fail = val < 5
			? Either<int>.Of(val) 
			: new Either<int>.Left("value not less than 4.");
		Console.WriteLine(test.Inspect());
		Console.WriteLine(t2.Inspect());
		Console.WriteLine(val); 
		Console.WriteLine(fail.Inspect());
	}
}
public class Error { 
	public string Message { get; private set; }
	public Error(string msg){Message = msg;} 
	public override string ToString() {return Message;}
}
public class Either<T> {
	public static Either<T> Of(T v) { return new Right(v); } 
	public string Inspect(){ 
		if(this is Left){ 
			var l =this as Left;
			return l.Inspect();
		} else if(this is Right){
			var r = this as Right; 
			return r.Inspect();
		} else return "";
	}
	public class Left : 
	Either<T>, IWrapper<Error> { 
		public Left(string value) {Value = new Error(value);}
		
      public Error Value { get; private set;}
	  public IWrapper<R> Select<R>(Func<Error,R> _){ 
		  return (IWrapper<R>)this;
	 }
	  public R Chain<R>(Func<Error,R> _) {
		  return (R)(object)Value;
	}
  }
	protected class Right: 
	Either<T>, IWrapper<T> {
		public T Value { get; private set;} 
		public Right(T value) { Value = value; }
		
	  public IWrapper<R> Select<R>(Func<T,R> fn) {
		  return (IWrapper<R>)Either<R>.Of(fn(Value));}
	  public R Chain<R>(Func<T,R> fn){
		  return fn(Value);}
	}
}


public interface IWrapper<T> { 
	T Value { get; }
    IWrapper<R> Select<R>(Func<T,R> fn);
    R Chain<R>(Func<T,R> fn);
}

public static class IWrapperXts {
    public static T Identity<T>(this T t){ 
		return t; }
	public static T Flat<T>(this IWrapper<T> @this) { 
		return @this.Chain<T>(Identity);}
	public static string Inspect<T>(this IWrapper<T> @this) {
		return string.Format("{0}({1})",@this.GetType().Name, @this.Value);} 
	public static IWrapper<T> AsWrapper<T>(this IWrapper<T> @this) { 
		return (IWrapper<T>)@this;
	}
	
}

​x
 
using System;
                    
public class Program
{
    public static void Main()
    {
        var test = (IWrapper<int>)Either<int>.Of(1); 
        var t2 = test.Select(i => i*2); 
        var val = t2.Chain(b => b*b); 
        var fail = val < 5
            ? Either<int>.Of(val) 
            : new Either<int>.Left("value not less than 4.");
        Console.WriteLine(test.Inspect());
        Console.WriteLine(t2.Inspect());
        Console.WriteLine(val); 
        Console.WriteLine(fail.Inspect());
    }
}
public class Error { 
    public string Message { get; private set; }
    public Error(string msg){Message = msg;} 
    public override string ToString() {return Message;}
}
public class Either<T> {
    public static Either<T> Of(T v) { return new Right(v); } 
    public string Inspect(){ 
        if(this is Left){ 
            var l =this as Left;
            return l.Inspect();
        } else if(this is Right){
            var r = this as Right; 
            return r.Inspect();
        } else return "";
    }
    public class Left : 
    Either<T>, IWrapper<Error> { 
        public Left(string value) {Value = new Error(value);}
        
      public Error Value { get; private set;}
      public IWrapper<R> Select<R>(Func<Error,R> _){ 
          return (IWrapper<R>)this;
     }
      public R Chain<R>(Func<Error,R> _) {
          return (R)(object)Value;
    }
  }
    protected class Right: 
    Either<T>, IWrapper<T> {
        public T Value { get; private set;} 
        public Right(T value) { Value = value; }
        
      public IWrapper<R> Select<R>(Func<T,R> fn) {
          return (IWrapper<R>)Either<R>.Of(fn(Value));}
      public R Chain<R>(Func<T,R> fn){
          return fn(Value);}
    }
}
​
​
public interface IWrapper<T> { 
    T Value { get; }
    IWrapper<R> Select<R>(Func<T,R> fn);
    R Chain<R>(Func<T,R> fn);
}
​
public static class IWrapperXts {
    public static T Identity<T>(this T t){ 
        return t; }
    public static T Flat<T>(this IWrapper<T> @this) { 
        return @this.Chain<T>(Identity);}
    public static string Inspect<T>(this IWrapper<T> @this) {
        return string.Format("{0}({1})",@this.GetType().Name, @this.Value);} 
    public static IWrapper<T> AsWrapper<T>(this IWrapper<T> @this) { 
        return (IWrapper<T>)@this;
    }
    
}

Model: Compilation error (line 3, col 2): Preprocessor directive expected
Model: Compilation error (line 3, col 4): Single-line comment or end-of-line expected
Model: Compilation error (line 10, col 231): Unexpected character '“'
Model: Compilation error (line 10, col 239): Unexpected character '”'
Model: Compilation error (line 14, col 2): Preprocessor directive expected
Model: Compilation error (line 14, col 3): Single-line comment or end-of-line expected
Model: Compilation error (line 17, col 59): Unexpected character '’'
Model: Compilation error (line 18, col 6): Unexpected character '’'
Model: Compilation error (line 22, col 3): Preprocessor directive expected
Model: Compilation error (line 22, col 10): Single-line comment or end-of-line expected
Model: Compilation error (line 26, col 2): Preprocessor directive expected
Model: Compilation error (line 26, col 4): Single-line comment or end-of-line expected
Model: Compilation error (line 28, col 184): Unexpected character '’'
Model: Compilation error (line 30, col 2): Preprocessor directive expected
Model: Compilation error (line 30, col 3): Single-line comment or end-of-line expected
Model: Compilation error (line 32, col 277): Unexpected character '“'
Model: Compilation error (line 32, col 282): Unexpected character '”'
Model: Compilation error (line 34, col 3): Preprocessor directive expected
Model: Compilation error (line 34, col 7): Single-line comment or end-of-line expected
Model: Compilation error (line 38, col 2): Preprocessor directive expected
Model: Compilation error (line 38, col 4): Single-line comment or end-of-line expected
Model: Compilation error (line 42, col 2): Preprocessor directive expected
Model: Compilation error (line 42, col 3): Single-line comment or end-of-line expected
Model: Compilation error (line 44, col 80): Unexpected character '“'
Model: Compilation error (line 44, col 88): Unexpected character '”'
Model: Compilation error (line 44, col 239): Unexpected character '’'
Model: Compilation error (line 46, col 3): Preprocessor directive expected
Model: Compilation error (line 46, col 12): Single-line comment or end-of-line expected
Model: Compilation error (line 48, col 26): Unexpected character '’'
Model: Compilation error (line 54, col 1): Unexpected character '$'
Model: Compilation error (line 54, col 2): Unexpected character '$'
Model: Compilation error (line 54, col 19): Unexpected character '$'
Model: Compilation error (line 54, col 20): Unexpected character '$'
Model: Compilation error (line 66, col 2): Preprocessor directive expected
Model: Compilation error (line 66, col 4): Single-line comment or end-of-line expected
Model: Compilation error (line 68, col 231): Unexpected character '“'
Model: Compilation error (line 68, col 239): Unexpected character '”'
Model: Compilation error (line 70, col 2): Preprocessor directive expected
Model: Compilation error (line 70, col 3): Single-line comment or end-of-line expected
Model: Compilation error (line 74, col 2): Preprocessor directive expected
Model: Compilation error (line 74, col 4): Single-line comment or end-of-line expected
Model: Compilation error (line 78, col 2): Preprocessor directive expected
Model: Compilation error (line 78, col 3): Single-line comment or end-of-line expected
Model: Compilation error (line 81, col 59): Unexpected character '’'
Model: Compilation error (line 82, col 6): Unexpected character '’'
Model: Compilation error (line 86, col 3): Preprocessor directive expected
Model: Compilation error (line 86, col 10): Single-line comment or end-of-line expected
Model: Compilation error (line 90, col 2): Preprocessor directive expected
Model: Compilation error (line 90, col 4): Single-line comment or end-of-line expected
Model: Compilation error (line 94, col 2): Preprocessor directive expected
Model: Compilation error (line 94, col 3): Single-line comment or end-of-line expected
Model: Compilation error (line 96, col 121): Unexpected character '“'
Model: Compilation error (line 96, col 130): Unexpected character '”'
Model: Compilation error (line 96, col 169): Unexpected character '“'
Model: Compilation error (line 96, col 178): Unexpected character '”'
Model: Compilation error (line 96, col 231): Unexpected character '»'
Model: Compilation error (line 96, col 240): Unexpected character '«'
Model: Compilation error (line 98, col 3): Preprocessor directive expected
Model: Compilation error (line 98, col 6): Single-line comment or end-of-line expected
Model: Compilation error (line 102, col 578): Too many characters in character literal
Model: Compilation error (line 102, col 887): Newline in constant
Model: Compilation error (line 102, col 887): Too many characters in character literal
Model: Compilation error (line 107, col 10): Too many characters in character literal
Model: Compilation error (line 110, col 7): Unexpected character '’'
Model: Compilation error (line 114, col 3): Preprocessor directive expected
Model: Compilation error (line 114, col 12): Single-line comment or end-of-line expected
Model: Compilation error (line 121, col 578): Too many characters in character literal
Model: Compilation error (line 121, col 887): Newline in constant
Model: Compilation error (line 121, col 887): Too many characters in character literal
Model: Compilation error (line 138, col 2): Preprocessor directive expected
Model: Compilation error (line 138, col 12): Single-line comment or end-of-line expected
Model: Compilation error (line 1, col 10): Expected class, delegate, enum, interface, or struct
Model: Compilation error (line 20, col 96): { expected
Model: Compilation error (line 20, col 110): ; expected
Model: Compilation error (line 20, col 118): ; expected
Model: Compilation error (line 20, col 143): Cannot use more than one type in a for, using, fixed, or declaration statement
Model: Compilation error (line 20, col 152): ; expected
Model: Compilation error (line 20, col 168): ; expected
Model: Compilation error (line 20, col 186): ; expected
Model: Compilation error (line 20, col 198): Invalid token '2022' in class, struct, or interface member declaration
Model: Compilation error (line 20, col 212): ; expected
Model: Compilation error (line 20, col 222): ; expected
Model: Compilation error (line 24, col 21): ; expected
Model: Compilation error (line 24, col 42): ; expected
Model: Compilation error (line 24, col 51): ; expected
Model: Compilation error (line 24, col 60): ; expected
Model: Compilation error (line 24, col 72): Identifier expected
Model: Compilation error (line 24, col 72): Syntax error, '(' expected
Model: Compilation error (line 28, col 1): Type expected
Model: Compilation error (line 28, col 21): ; expected
Model: Compilation error (line 28, col 36): ; expected
Model: Compilation error (line 28, col 55): ; expected
Model: Compilation error (line 28, col 71): ; expected
Model: Compilation error (line 28, col 84): ; expected
Model: Compilation error (line 28, col 93): ; expected
Model: Compilation error (line 28, col 109): ; expected
Model: Compilation error (line 28, col 121): ; expected
Model: Compilation error (line 28, col 130): Invalid token '4' in class, struct, or interface member declaration
Model: Compilation error (line 28, col 142): ; expected
Model: Compilation error (line 28, col 163): ; expected
Model: Compilation error (line 28, col 177): ; expected
Model: Compilation error (line 28, col 184): Invalid token '’' in class, struct, or interface member declaration
Model: Compilation error (line 28, col 192): ; expected
Model: Compilation error (line 28, col 199): ; expected
Model: Compilation error (line 28, col 209): ; expected
Model: Compilation error (line 28, col 221): ; expected
Model: Compilation error (line 28, col 230): ; expected
Model: Compilation error (line 28, col 244): ; expected
Model: Compilation error (line 28, col 251): Invalid token 'while' in class, struct, or interface member declaration
Model: Compilation error (line 28, col 272): ; expected
Model: Compilation error (line 28, col 286): ; expected
Model: Compilation error (line 28, col 298): ; expected
Model: Compilation error (line 28, col 310): ; expected
Model: Compilation error (line 32, col 12): ; expected
Model: Compilation error (line 32, col 20): Invalid token '/' in class, struct, or interface member declaration
Model: Compilation error (line 32, col 27): ; expected
Model: Compilation error (line 32, col 39): ; expected
Model: Compilation error (line 32, col 54): Syntax error, '[' expected
Model: Compilation error (line 32, col 61): Identifier expected; 'for' is a keyword
Model: Compilation error (line 32, col 74): ; expected
Model: Compilation error (line 32, col 81): Invalid token ',' in class, struct, or interface member declaration
Model: Compilation error (line 32, col 96): ; expected
Model: Compilation error (line 32, col 105): Invalid token 'for' in class, struct, or interface member declaration
Model: Compilation error (line 32, col 118): ; expected
Model: Compilation error (line 32, col 127): ; expected
Model: Compilation error (line 32, col 135): ; expected
Model: Compilation error (line 32, col 144): ; expected
Model: Compilation error (line 32, col 153): ; expected
Model: Compilation error (line 32, col 167): ; expected
Model: Compilation error (line 32, col 178): ; expected
Model: Compilation error (line 32, col 191): ; expected
Model: Compilation error (line 32, col 204): ; expected
Model: Compilation error (line 32, col 216): ; expected
Model: Compilation error (line 32, col 225): ; expected
Model: Compilation error (line 32, col 233): ; expected
Model: Compilation error (line 32, col 248): ; expected
Model: Compilation error (line 32, col 255): ; expected
Model: Compilation error (line 32, col 262): ; expected
Model: Compilation error (line 32, col 277): ; expected
Model: Compilation error (line 32, col 282): Invalid token '”' in class, struct, or interface member declaration
Model: Compilation error (line 32, col 293): ; expected
Model: Compilation error (line 32, col 305): ; expected
Model: Compilation error (line 32, col 321): ; expected
Model: Compilation error (line 32, col 329): ; expected
Model: Compilation error (line 32, col 337): Invalid token ',' in class, struct, or interface member declaration
Model: Compilation error (line 32, col 357): ; expected
Model: Compilation error (line 32, col 364): ; expected
Model: Compilation error (line 32, col 372): Invalid token ',' in class, struct, or interface member declaration
Model: Compilation error (line 32, col 381): Invalid token '2' in class, struct, or interface member declaration
Model: Compilation error (line 32, col 396): ; expected
Model: Compilation error (line 32, col 414): ; expected
Model: Compilation error (line 32, col 423): Invalid token '4' in class, struct, or interface member declaration
Model: Compilation error (line 32, col 442): ; expected
Model: Compilation error (line 32, col 451): ; expected
Model: Compilation error (line 32, col 462): ; expected
Model: Compilation error (line 32, col 474): ; expected
Model: Compilation error (line 32, col 483): ; expected
Model: Compilation error (line 40, col 10): ; expected
Model: Compilation error (line 40, col 19): Invalid token '4' in class, struct, or interface member declaration
Model: Compilation error (line 40, col 29): ; expected
Model: Compilation error (line 40, col 39): ; expected
Model: Compilation error (line 40, col 53): ; expected
Model: Compilation error (line 40, col 63): ; expected
Model: Compilation error (line 40, col 76): ; expected
Model: Compilation error (line 40, col 85): ; expected
Model: Compilation error (line 40, col 97): ; expected
Model: Compilation error (line 40, col 104): ; expected
Model: Compilation error (line 40, col 112): ; expected
Model: Compilation error (line 40, col 130): ; expected
Model: Compilation error (line 40, col 145): ; expected
Model: Compilation error (line 40, col 163): ; expected
Model: Compilation error (line 40, col 177): ; expected
Model: Compilation error (line 40, col 186): ; expected
Model: Compilation error (line 40, col 201): ; expected
Model: Compilation error (line 40, col 213): ; expected
Model: Compilation error (line 40, col 221): ; expected
Model: Compilation error (line 40, col 233): ; expected
Model: Compilation error (line 40, col 240): ; expected
Model: Compilation error (line 40, col 247): ; expected
Model: Compilation error (line 40, col 259): ; expected
Model: Compilation error (line 40, col 271): ; expected
Model: Compilation error (line 40, col 281): ; expected
Model: Compilation error (line 40, col 292): ; expected
Model: Compilation error (line 40, col 302): ; expected
Model: Compilation error (line 40, col 309): ; expected
Model: Compilation error (line 40, col 319): ; expected
Model: Compilation error (line 44, col 20): ; expected
Model: Compilation error (line 44, col 29): ; expected
Model: Compilation error (line 44, col 36): Invalid token '3' in class, struct, or interface member declaration
Model: Compilation error (line 44, col 65): ; expected
Model: Compilation error (line 44, col 76): ; expected
Model: Compilation error (line 44, col 80): Invalid token '“' in class, struct, or interface member declaration
Model: Compilation error (line 44, col 88): Invalid token '”' in class, struct, or interface member declaration
Model: Compilation error (line 44, col 100): ; expected
Model: Compilation error (line 44, col 110): ; expected
Model: Compilation error (line 44, col 119): Invalid token '!' in class, struct, or interface member declaration
Model: Compilation error (line 44, col 131): ; expected
Model: Compilation error (line 44, col 137): ; expected
Model: Compilation error (line 44, col 148): ; expected
Model: Compilation error (line 44, col 161): ; expected
Model: Compilation error (line 44, col 172): ; expected
Model: Compilation error (line 44, col 182): ; expected
Model: Compilation error (line 44, col 195): ; expected
Model: Compilation error (line 44, col 202): Invalid token '100' in class, struct, or interface member declaration
Model: Compilation error (line 44, col 216): Invalid token 'for' in class, struct, or interface member declaration
Model: Compilation error (line 44, col 233): ; expected
Model: Compilation error (line 44, col 239): ; expected
Model: Compilation error (line 44, col 249): ; expected
Model: Compilation error (line 44, col 260): ; expected
Model: Compilation error (line 44, col 283): ; expected
Model: Compilation error (line 44, col 295): ; expected
Model: Compilation error (line 44, col 308): ; expected
Model: Compilation error (line 44, col 317): ; expected
Model: Compilation error (line 44, col 327): ; expected
Model: Compilation error (line 44, col 333): ; expected
Model: Compilation error (line 44, col 348): ; expected
Model: Compilation error (line 44, col 374): ; expected
Model: Compilation error (line 44, col 384): ; expected
Model: Compilation error (line 44, col 390): ; expected
Model: Compilation error (line 44, col 399): ; expected
Model: Compilation error (line 44, col 409): Invalid token 'interface' in class, struct, or interface member declaration
Model: Compilation error (line 44, col 424): { expected
Model: Compilation error (line 44, col 433): ; expected
Model: Compilation error (line 44, col 441): ; expected
Model: Compilation error (line 44, col 448): ; expected
Model: Compilation error (line 44, col 464): Cannot use more than one type in a for, using, fixed, or declaration statement
Model: Compilation error (line 44, col 471): ; expected
Model: Compilation error (line 44, col 479): ; expected
Model: Compilation error (line 44, col 492): ; expected
Model: Compilation error (line 44, col 500): ; expected
Model: Compilation error (line 44, col 519): ; expected
Model: Compilation error (line 44, col 528): ; expected
Model: Compilation error (line 44, col 541): ; expected
Model: Compilation error (line 44, col 561): ; expected
Model: Compilation error (line 44, col 573): ; expected
Model: Compilation error (line 44, col 587): ; expected
Model: Compilation error (line 44, col 596): ; expected
Model: Compilation error (line 44, col 612): ; expected
Model: Compilation error (line 44, col 621): ; expected
Model: Compilation error (line 48, col 10): ; expected
Model: Compilation error (line 48, col 26): Invalid token '’' in class, struct, or interface member declaration
Model: Compilation error (line 48, col 40): ; expected
Model: Compilation error (line 48, col 49): ; expected
Model: Compilation error (line 50, col 19): ; expected
Model: Compilation error (line 50, col 30): ; expected
Model: Compilation error (line 51, col 19): ; expected
Model: Compilation error (line 51, col 31): ; expected
Model: Compilation error (line 51, col 46): ; expected
Model: Compilation error (line 52, col 19): ; expected
Model: Compilation error (line 52, col 26): Member modifier 'new' must precede the member type and name
Model: Compilation error (line 52, col 45): ; expected
Model: Compilation error (line 53, col 19): ; expected
Model: Compilation error (line 53, col 32): ; expected
Model: Compilation error (line 53, col 45): ; expected
Model: Compilation error (line 54, col 1): Invalid token '$' in class, struct, or interface member declaration
Model: Compilation error (line 54, col 19): ; expected
Model: Compilation error (line 54, col 40): ; expected
Model: Compilation error (line 54, col 51): ; expected
Model: Compilation error (line 54, col 67): ; expected
Model: Compilation error (line 54, col 75): Invalid token '-' in class, struct, or interface member declaration
Model: Compilation error (line 54, col 86): ; expected
Model: Compilation error (line 54, col 103): ; expected
Model: Compilation error (line 54, col 114): ; expected
Model: Compilation error (line 55, col 11): ; expected
Model: Compilation error (line 55, col 33): ; expected
Model: Compilation error (line 55, col 42): Invalid token '4' in class, struct, or interface member declaration
Model: Compilation error (line 55, col 53): ; expected
Model: Compilation error (line 55, col 69): ; expected
Model: Compilation error (line 55, col 88): ; expected
Model: Compilation error (line 55, col 97): Invalid token '4' in class, struct, or interface member declaration
Model: Compilation error (line 55, col 108): ; expected
Model: Compilation error (line 44, col 419): 'that': interfaces cannot declare types

Last Run:	4:39:57 am
Compile:	0s
Execute:	0.033s
Memory:	0b
CPU:	0s

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