[#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:03281] Re: BUG or something?

From: Dave Thomas <Dave@...>
Date: 2000-06-12 11:18:48 UTC
List: ruby-talk #3281
Aleksi Niemel<aleksi.niemela@cinnober.com> writes:

> This means that you can't write
> 
> " now's   the time".split
>
> because if you happen to say 'require "foo"' and foo happens to
> change $; (maybe even indirectly saying eval for something coming
> from file (really bad :)) you're soon out of luck. So to be on the
> safe side you have to give up the common idiom and write split
> everytime by specifying the whitespace.

Actually, it's even worse than that. With $;, the person invoking the
prohram can override it with the -F option, so you're not safe just
because you don't include any modules.

How about making any assignment to one of these globals-with-a-
side-effect generate a warning if -w was in effect. That way you'd at
least know that it was happening.


     % ruby -w -F! dave
     Warning: changing $; may affect this program's behavior

If you have a legitimate reason for doing it, you can turn warnings
off in the code while you make the assignment. At least that extra
effort would make you think about the potential consequences.


Regards


Dave

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