c# – 如何克隆类实例?
发布时间:2020-12-15 04:17:23 所属栏目:百科 来源:网络整理
导读:所以我有这门课: class Test{ private int field1; private int field2; public Test() { field1 = // some code that needs field2 = // a lot of cpu time } private Test GetClone() { Test clone = // what do i have to write there to get Test insta
所以我有这门课:
class Test { private int field1; private int field2; public Test() { field1 = // some code that needs field2 = // a lot of cpu time } private Test GetClone() { Test clone = // what do i have to write there to get Test instance // without executing Test class' constructor that takes // a lot of cpu time? clone.field1 = field1; clone.field2 = field2; return clone; } } 代码几乎解释了自己.我试图解决这个问题并想出了这个: private Test(bool qwerty) {} private Test GetClone() { Test clone = new Test(true); clone.field1 = field1; clone.field2 = field2; return clone; } 我没有测试过,但我做得对吗?有没有更好的方法呢? 解决方法
通常,人们会为此编写一个复制构造函数:
public Test(Test other) { field1 = other.field1; field2 = other.field2; } 如果需要,您还可以立即添加克隆方法: public Test Clone() { return new Test(this); } 更进一步,你可以让你的班级实现ICloneable.如果类支持克隆自身,则这是应该实现的默认接口. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |