C#中的Object.GetHashCode()方法用作默认的哈希函数。
public virtual int GetHashCode ();
现在让我们看一个例子-
using System; public class Demo { public static void Main() { Object ob = new Object(); String str = "Jim"; Type type1 = ob.GetType(); Type type2 = str.GetType(); Console.WriteLine("Hash Code = "+type1.GetHashCode()); Console.WriteLine("Hash Code = "+type2.GetHashCode()); } }
输出结果
Hash Code =30015890 Hash Code =21083178
现在让我们来看另一个示例:
using System; public struct Value { private int v1; private int v2; private int v3; public Value(int v1, int v2, int v3) { this.v1 = v1; this.v2 = v2; this.v3 = v3; } public override int GetHashCode() { return Tuple.Create(v1, v2, v3).GetHashCode(); } } public class Demo { public static void Main() { Value v = new Value(1, 7, 12); Console.WriteLine(v.GetHashCode()); v = new Value(12, 8, 7); Console.WriteLine(v.GetHashCode()); v = new Value(8, 7, 12); Console.WriteLine(v.GetHashCode()); } }
输出结果
这将产生以下输出-
1258 12803 8931