32 lines
406 B
C#
32 lines
406 B
C#
|
using System.Collections.Generic;
|
||
|
|
|
||
|
|
class Expr
|
||
|
|
{
|
||
|
|
public int Field;
|
||
|
|
public Expr Next;
|
||
|
|
}
|
||
|
|
|
||
|
|
static class X
|
||
|
|
{
|
||
|
|
public static IEnumerable<int> Test (this Expr expr)
|
||
|
|
{
|
||
|
|
var exprCur = expr;
|
||
|
|
while (exprCur != null)
|
||
|
|
{
|
||
|
|
if (exprCur is Expr list)
|
||
|
|
{
|
||
|
|
yield return list.Field;
|
||
|
|
exprCur = list.Next;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
yield return 2;
|
||
|
|
yield break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void Main ()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
}
|