Re: new Class(*this)

From:
Jorgen Grahn <grahn+nntp@snipabacken.se>
Newsgroups:
comp.lang.c++
Date:
9 Apr 2015 20:29:30 GMT
Message-ID:
<slrnmido97.2ot.grahn+nntp@frailea.sa.invalid>
On Wed, 2015-04-08, ?? Tiib wrote:

On Thursday, 9 April 2015 01:25:18 UTC+3, Christopher Pisz wrote:

On 4/8/2015 4:01 PM, Doug Mika wrote:

On Wednesday, April 8, 2015 at 2:28:26 PM UTC-6, Doug Mika wrote:

I have the following two classes:

class Fish{
public:
   virtual Fish* Clone()=0;
   virtual void Swim()=0;
};

....

It is also unwise to implement such methods as "Clone". Silly methods
like those are often carried over from people who want to shape and mold
C++ to be like Java or wherever they came from. We don't need a clone
method, because we already have the means to make a copy...via the copy
constructor:


It is not silly. Sometimes we need dynamic polymorphism in C++.


Undoubtedly ... but the OP is obviously a newbie, and the things
you're talking about is (should be) an advanced and late topic.

I have to agree with Mr Pisz: I sense Java, or Smalltalk, or whatever,
lurking in the background here. Continuing that path is not a good
way to learn how to use C++ well.

/Jorgen

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