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