[#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:03524] Re: Deep copy?

From: gotoken@... (GOTO Kentaro)
Date: 2000-06-19 16:53:58 UTC
List: ruby-talk #3524
In message "[ruby-talk:03522] Re: Deep copy?"
    on 00/06/19, Hugh Sasse Staff Elec Eng <hgs@dmu.ac.uk> writes:
>Probably, but it would be slow.  I think it is interesting that deep copy
>is not available, though I can see why overuse would be a problem.
>
>I would suggest that it is not the sort of thing the programmer should
>have to manage if the language implememntation could handle it correctly.

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
a hash including an IO is undecidable too.  Because such binding is
dynamically changing in languages like Ruby, we have to understand the
state of an object more clearly.  This is, unfortunately, known as a
difficult mathematical problem.  Some solutions have been proposed but
a clincher has not came yet. 

-- gotoken

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