it seems this code is valid. I am wondering what if getTest(1)
IEnumerable<int> getTest(int n)
{
if (n == 0)
yield return 1;
else
;
}
它将退回一个空的但非核的<编码>IE numberable<int>。
一旦您标明了一种作为导体的方法(使用yield,在方法的任何地点,可以执行zero或。 <代码>收益/代码>,以便按顺序回归数据。
In fact, the simplest way to get an empty IEnumberable is IEnumerable<T> Empty() { yield break; }.
Or just call Enumerable.Empty<T>().
It just returns an empty, although fully "valid", enumerable. Everything went exactly as expected.
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