我有以下类(为Unity游戏引擎构建):
我实现有什么问题吗?
更新:如果有影响,这里是完整的类:https://www.hastebin.com/divazubero.cpp
using System;
using System.Collections.Generic;
using UnityEngine;
public class Biome : ScriptableObject, IEquatable<Biome>
{
// ...
//
// IEquatable
//
public bool Equals(Biome other)
{
if (other == null)
return false;
return this.name == other.name;
}
public override bool Equals(object obj)
{
if (obj == null) return false;
Biome other = obj as Biome;
if (other == null) return false;
return Equals(other);
}
public override int GetHashCode()
{
return this.name.GetHashCode();
}
public static bool operator ==(Biome biome1, Biome biome2)
{
if (object.ReferenceEquals(biome1, biome2)) return true;
if (object.ReferenceEquals(null, biome1)) return false;
if (object.ReferenceEquals(null, biome2)) return false;
return biome1.Equals(biome2);
}
public static bool operator !=(Biome biome1, Biome biome2)
{
if (object.ReferenceEquals(biome1, biome2)) return false;
if (object.ReferenceEquals(biome1, null)) return true;
if (object.ReferenceEquals(biome2, null)) return true;
return !biome1.Equals(biome2);
}
}
当我尝试进行测试时,函数Equals
似乎有效,但运算符==
给了我不同的结果。
[Test]
public void FooTest()
{
ScriptableObject biome1 = ScriptableObject.CreateInstance("Biome");
ScriptableObject biome2 = ScriptableObject.CreateInstance("Biome");
biome1.name = "Biome #1";
biome2.name = "Biome #1";
Assert.IsTrue(biome1.Equals(biome2));
Assert.IsTrue(biome1 == biome2); // This one fails
}
我实现有什么问题吗?
更新:如果有影响,这里是完整的类:https://www.hastebin.com/divazubero.cpp
!=
的典型实现仅为return !(a == b)
。 - juharrif (other == null)
会再次调用你的==
运算符。 - René Vogttrue
。所以似乎还有更多与这个问题相关的代码或信息。 - René VogtBiome
类型。如果它们是“object”,我就能得到你的结果。看来@emsimpson92是有道理的。 - René Vogt