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  1. using System;
  2. using System.Linq;
  3.  
  4. public class Test
  5. {
  6.         struct MyStruct
  7.     {
  8.         public int index;
  9.     }
  10.     private static MyStruct?[] GetRow(int?[] row)
  11.     {
  12.         return row.Select(
  13.                 (el, ind) => el == 0 ? (MyStruct?)new MyStruct { index = ind } : null)
  14.                               .Where(el => el != null).ToArray();
  15.     }
  16.     static void Main(string[] args)
  17.     {
  18.         int?[] row = new int?[] { 0, null, 1, 2, 3, 0 };
  19.         var ar = GetRow(row);
  20.  
  21.         ar.Select(el => { Console.WriteLine(el?.index); return el; }).ToArray();
  22.         Console.WriteLine(ar.Count());
  23.     }
  24. }
Success #stdin #stdout 0.01s 29800KB
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Standard input is empty
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https://ideone.com/R0A6lJ
language:
C# (gmcs 5.20.1)
created:
7 years ago
visibility:
public

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