我在C#中发现的一段奇怪的代码(对于使用.NET的其他CLI语言也应如此structs
).
using System;
public class Program
{
public static void Main(string[] args)
{
int a;
long b;
a = 0;
b = 0;
Console.WriteLine(a.Equals(b)); // False
Console.WriteLine(a.Equals(0L)); // False
Console.WriteLine(a.Equals((long)0)); // False
Console.WriteLine(a.Equals(0)); // True
Console.WriteLine(a.Equals(a)); // True
Console.WriteLine(a == b); // True
Console.WriteLine(a == 0L); // True
Console.WriteLine();
Console.WriteLine(b.Equals(a)); // True
Console.WriteLine(b.Equals(0)); // True
Console.WriteLine(b.Equals((int)0)); // True
Console.WriteLine(b.Equals(b)); // True
Console.WriteLine(b == a); // True
Console.WriteLine(b == 0); // True
}
}
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这里有两个有趣的点(假设a
是int
和 …