[#3109] Is divmod dangerous? — Dave Thomas <Dave@...>

14 messages 2000/06/06

[#3149] Retrieving the hostname and port in net/http — Roland Jesse <jesse@...>

Hi,

12 messages 2000/06/07

[#3222] Ruby coding standard? — Robert Feldt <feldt@...>

16 messages 2000/06/09

[#3277] Re: BUG or something? — Aleksi Niemel<aleksi.niemela@...>

> |I am new to Ruby and this brings up a question I have had

17 messages 2000/06/12
[#3281] Re: BUG or something? — Dave Thomas <Dave@...> 2000/06/12

Aleksi Niemel<aleksi.niemela@cinnober.com> writes:

[#3296] RE: about documentation — Aleksi Niemel<aleksi.niemela@...>

> I want to contribute to the ruby project in my spare time.

15 messages 2000/06/12

[#3407] Waffling between Python and Ruby — "Warren Postma" <embed@...>

I was looking at the Ruby editor/IDE for windows and was disappointed with

19 messages 2000/06/14

[#3410] Exercice: Translate into Ruby :-) — Jilani Khaldi <jilanik@...>

Hi All,

17 messages 2000/06/14

[#3415] Re: Waffling between Python and Ruby — Andrew Hunt <andy@...>

>Static typing..., hmm,...

11 messages 2000/06/14

[#3453] Re: Static Typing( Was: Waffling between Python and Ruby) — Andrew Hunt <andy@...>

32 messages 2000/06/16

[#3516] Deep copy? — Hugh Sasse Staff Elec Eng <hgs@...>

Given that I cannot overload =, how should I go about ensuring a deep

20 messages 2000/06/19

[#3694] Why it's quiet — hal9000@...

We are all busy learning the new language

26 messages 2000/06/29
[#3703] Re: Why it's quiet — "NAKAMURA, Hiroshi" <nahi@...> 2000/06/30

Hi,

[#3705] Re: Why it's quiet — matz@... (Yukihiro Matsumoto) 2000/06/30

Hi,

[ruby-talk:03528] Re: Deep copy?

From: Charles Hixson <charleshixsn@...>
Date: 2000-06-19 17:57:43 UTC
List: ruby-talk #3528
GOTO Kentaro wrote:

> ... snip ...
> A serious problem is the meaning of copy.  More precisely, we don't
> have a consensus to what an object is,i.e. the state of an object. For
> example, the behavior of an IO object in the future is undecidable, so
> ... snip ...
> -- gotoken

The smalltalk approach quoted above suggests a method around this.  Implement
a (nearly) vacuous method in Object, and name it DeepCopy (the default for
Object could be the same as the shallow copy).  Then it is the responsibility
of every descendant that wishes DeepCopy to be implemented to do the
implementation.  Of course numeric methods would have a clear and obvious
method of doing a DeepCopy, but as it isn't generally needed, many of the
classes could just leave this to be implemented by a descendant.

Attachments (1)

charleshixsn.vcf (145 Bytes, text/x-vcard)
begin:vcard 
n:Hixson;Charles
x-mozilla-html:FALSE
adr:;;;;;;
version:2.1
email;internet:charleshixson@earthling.net
fn:Charles Hixson
end:vcard

In This Thread