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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5. public class Test
  6. {
  7.     public static void Main()
  8.     {
  9.         IEnumerable<string> stream = Enumerable.Concat(new[] {"A"}, new[] {"B"});
  10.         string a = stream.FirstOrDefault();
  11.         string b = stream.FirstOrDefault();
  12.         Console.WriteLine(a);
  13.         Console.WriteLine(b);
  14.     }
  15. }
Success #stdin #stdout 0.03s 15496KB
comments (?)
stdin 
Standard input is empty
stdout 
A
A
https://ideone.com/axLtod
language:
C# (gmcs 5.20.1)
created:
7 years ago
visibility:
public

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