c#简单问题~~~~~~~~~~

Question

if( "a" in("a","b") )这样写出错。。应该怎么写？

Answer 1

"a"和("a","b")都已经是字面值了，还判断什么呀，直接就是true了

Answer 2

if((new string[]{"a","b"}).Contains("a"))

Answer 3

        string[] strs = { "a", "b" };
        if (strs.Contains("a"))

Answer 4

            string[] ab = new string[] { "a","b"};
            string a = "a";            if (ab.Contains(a))
            {
                Console.WriteLine(true);
            }

Answer 5

    if ((new string[] { "a", "b" }).Contains("a"))
            {
             
            }