什么是深拷贝，浅拷贝和bitwises拷贝。 [英] what is Deep Copy, shallow copy and bitwises copy.?

问题描述

什么是深拷贝，浅拷贝和按位拷贝，成员拷贝？

和它们之间有什么区别？

请帮助

vaibhav

what is Deep Copy, Shallow copy and Bitwise copy, Memberwise copy?
and what is the difference between them?
pls help
vaibhav

推荐答案

sa ************* @ gmail.com 写道：

什么是深拷贝，浅复制和按位复制，成员复制？

和它们之间有什么区别？

what is Deep Copy, Shallow copy and Bitwise copy, Memberwise copy?
and what is the difference between them?

什么是家庭作业问题？请参阅此常见问题解答：

http://parashift.com/c++-faq-lite/ho...t.html#faq-5.2


肯定谷歌可以帮到你。


干杯！ - m

What is a homework question? See this FAQ:

http://parashift.com/c++-faq-lite/ho...t.html#faq-5.2

Surely google can help you.

Cheers! --M

2006年8月30日06:06:40 -0700，mlimber < ml ***** @ gmail.comwrote：

On 30 Aug 2006 06:06:40 -0700, "mlimber" <ml*****@gmail.comwrote:

> sa ************* @ gmail.com写道：

>sa*************@gmail.com wrote:

>什么是深拷贝，浅拷贝和按位拷贝，成员拷贝？
它们之间有什么区别？

>what is Deep Copy, Shallow copy and Bitwise copy, Memberwise copy?
and what is the difference between them?

什么是家庭作业问题？请参阅此常见问题解答：

What is a homework question? See this FAQ:

这听起来不像是家​​庭作业。这个问题没有包含在C ++

FAQ中。我无法快速找到一个有正当解释的链接。

答案并非完全无关紧要（例如：对于哪些对象是按位的？/ b $ b副本是否合适？何时成员副本浅，深？？）。<没有人应该阻止答案。

BTW，复制构造函数几乎不需要实现，但是应该将
设为私有（没有实现）。


祝你好运，

Roland Pibinger

It doesn''t sound like homework. The question is not covered in the C++
FAQ. I cannot quickly find a link with decent explanations. The
answers are not entirely trivial (e.g.: For which objects is a bitwise
copy appropriate? When is a memberwise copy shallow, when deep? ...).
Nobody should hold back answers.
BTW, copy constructors almost never need to be implemented but should
be made private (without implementation).

Best regards,
Roland Pibinger

Roland Pibinger写道：

< snip>

Roland Pibinger wrote:

<snip>

BTW，复制构造函数几乎从不需要实现但是应该将
设为私有（没有实现）。

BTW, copy constructors almost never need to be implemented but should
be made private (without implementation).

为什么？难道不经常复制构造会产生语义感吗？

-

Nick Keighley

why? Doesn''t copy construction very often make semantic sense?
--
Nick Keighley

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