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  1. using System;
  2. using System.Linq;
  3. using System.Collections.Generic;
  4.  
  5. public class Test
  6. {
  7.         public static void Main()
  8.         {
  9.                 var list = new List<Fact> () {
  10.                             new Fact { Thing = "Roses are", Color = 0xFF0000 },
  11.                                     new Fact { Thing = "Roses are", Color = 0xFF0000 },
  12.                                     new Fact { Thing = "Violets are", Color = 0x0000FF },
  13.                                     new Fact { Thing = "Sugar is", Color = 0x1337 },
  14.                                     new Fact { Thing = "Sugar is", Color = 0x1337 },
  15.                             };                            
  16.                 foreach(var item in GetFacts(list)) {
  17.                     Console.WriteLine ("{0:x} {1:x}", item.Thing, item.Color);
  18.                 }
  19.         }
  20.  
  21.         public static IEnumerable<Fact> GetFacts(IEnumerable<Fact> list) {
  22.             return list.GroupBy(x => new { x.Thing, x.Color }, (key,group) => group.First());
  23.         }
  24. }
  25.  
  26. public class Fact
  27. {
  28.     public string Thing { get; set; }
  29.     public int Color { get; set; }
  30. }
  31.  
Success #stdin #stdout 0.06s 34048KB
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stdin
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Standard input is empty
stdout
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Roses are ff0000
Violets are ff
Sugar is 1337
https://ideone.com/uWtZrT
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
public

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