[#20675] RCR: non-bang equivalent to []= — Tobias Reif <tobiasreif@...>

Hi,

49 messages 2001/09/01
[#20774] Re: RCR: non-bang equivalent to []= — Tobias Reif <tobiasreif@...> 2001/09/03

I wrote:

[#20778] Re: RCR: non-bang equivalent to []= — Kevin Smith <kevinbsmith@...> 2001/09/03

--- Tobias Reif <tobiasreif@pinkjuice.com> wrote:

[#20715] oreilly buch von matz - website online — markus jais <info@...>

hi

43 messages 2001/09/02
[#20717] Re: OReilly Ruby book has snail on cover — ptkwt@...1.aracnet.com (Phil Tomson) 2001/09/02

Actually, thanks for posting it here. I was trying to search OReilly's

[#20922] Re: OReilly Ruby book has snail on cover — Paul Brannan <pbrannan@...> 2001/09/05

On Mon, 3 Sep 2001, Phil Tomson wrote:

[#20768] Minor cgi.rb question — "Hal E. Fulton" <hal9000@...>

I don't have much experience with

25 messages 2001/09/03

[#20770] Calling member methods from C++ — jglueck@... (Bernhard Glk)

Some quetsions have been solved for me, but my message system does not

12 messages 2001/09/03

[#20976] destructor — Frank Sonnemans <ruby@...>

Does Ruby have a destructor as in C++?

25 messages 2001/09/07

[#21218] Ruby objects <-> XML: anyone working on this? — senderista@... (Tobin Baker)

Are there any Ruby analogs of these two Python modules (xml_pickle,

13 messages 2001/09/15

[#21296] nested require files need path internally — Bob Gustafson <bobgus@...>

Version: 1.64

29 messages 2001/09/18
[#21298] Re: nested require files need path internally — David Alan Black <dblack@...> 2001/09/18

Hello --

[#21302] Re: nested require files need path internally — Bob Gustafson <bobgus@...> 2001/09/18

On Tue, 18 Sep 2001, David Alan Black wrote:

[#21303] Re: nested require files need path internally — matz@... (Yukihiro Matsumoto) 2001/09/18

Hi,

[#21306] Re: nested require files need path internally — Lars Christensen <larsch@...> 2001/09/18

On Tue, 18 Sep 2001, Yukihiro Matsumoto wrote:

[#21307] Re: nested require files need path internally — matz@... (Yukihiro Matsumoto) 2001/09/18

Hi,

[#21331] Re: nested require files need path internally — Paul Brannan <pbrannan@...> 2001/09/18

> The big difference is C++ search done in compile time, Ruby search

[#21340] Re: nested require files need path internally — matz@... (Yukihiro Matsumoto) 2001/09/18

Hi,

[#21353] Re: nested require files need path internally — Paul Brannan <pbrannan@...> 2001/09/18

On Wed, 19 Sep 2001, Yukihiro Matsumoto wrote:

[#21366] Re: nested require files need path internally — matz@... (Yukihiro Matsumoto) 2001/09/19

Hi,

[#21368] Re: nested require files need path internally — "Julian Fitzell" <julian-ml@...4.com> 2001/09/19

On 19/09/2001 at 10:12 AM matz@ruby-lang.org wrote:

[#21376] Re: nested require files need path internally — matz@... (Yukihiro Matsumoto) 2001/09/19

Hi,

[#21406] Re: nested require files need path internally — Paul Brannan <pbrannan@...> 2001/09/19

On Wed, 19 Sep 2001, Yukihiro Matsumoto wrote:

[#21315] Suggestions for new CGI lib — anders@... (Anders Johannsen)

From the comp.lang.ruby thread "Minor cgi.rb question" (2001-09-03), I

21 messages 2001/09/18

[#21413] Ruby/objects book in style of The Little Lisper — Brian Marick <marick@...>

I fell in love with Lisp in the early 80's. Back then, I read a book called

36 messages 2001/09/19
[#21420] Re: Ruby/objects book in style of The Little Lisper — Christopher Sawtell <csawtell@...> 2001/09/20

On 20 Sep 2001 06:19:44 +0900, Brian Marick wrote:

[#21479] Re: Ruby/objects book in style of The Little Lisper — Kevin Smith <kevinbsmith@...> 2001/09/21

--- Christopher Sawtell <csawtell@paradise.net.nz> wrote:

[#21491] SV: Re: Ruby/objects book in style of The Little Lisper — "Mikkel Damsgaard" <mikkel_damsgaard@...> 2001/09/21

[#21494] Re: SV: Re: Ruby/objects book in style of The Little Lisper — Kevin Smith <kevinbsmith@...> 2001/09/21

--- Mikkel Damsgaard <mikkel_damsgaard@mailme.dk> wrote:

[#21510] Re: SV: Re: Ruby/objects book in style of The Little Lisper — Todd Gillespie <toddg@...> 2001/09/22

On Sat, 22 Sep 2001, Kevin Smith wrote:

[#21514] Re: SV: Re: Ruby/objects book in style of The Little Lisper — Kevin Smith <kevinbsmith@...> 2001/09/22

--- Todd Gillespie <toddg@mail.ma.utexas.edu> wrote:

[#21535] irb — Fabio <fabio.spelta@...>

Hello. :) I'm new here, and I have not found an archive of the previous

15 messages 2001/09/22

[#21616] opening a named pipe? — "Avdi B. Grimm" <avdi@...>

I'm having trouble reading from a named pipe in linux. basicly, I'm

12 messages 2001/09/24

[#21685] manipulating "immutable" objects such as Fixnum from within callbacks & al... — Guillaume Cottenceau <gc@...>

Hello,

15 messages 2001/09/25

[#21798] Ruby internal (guide to the source) — "Benoit Cerrina" <benoit.cerrina@...>

Hi,

22 messages 2001/09/28

[ruby-talk:20978] Re: destructor

From: "Nat Pryce" <nat.pryce@...13media.com>
Date: 2001-09-07 11:34:57 UTC
List: ruby-talk #20978
Ruby uses blocks to scope resource allocation and deallocation to scopes ,
just like C++ does with constructors/destructors.  Look at the File::open
method for an example.

The basic idiom is for the class to define a method that takes a block,
create an instance, pass it to the block, and then destroy the instance with
an ensure statement.

Here's some pseudocode illustrating this idiom in the abstract...

class Resource
    def Resource.use( param )
        resource = Resource.new( param )
        try
            return yield( resource )
        ensure
            resource.close
        end
    end
end

----- Original Message -----
From: "Niklas Frykholm" <r2d2@acc.umu.se>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Friday, September 07, 2001 11:46 AM
Subject: [ruby-talk:20977] Re: destructor


> [Frank Sonnemans]
> > Does Ruby have a destructor as in C++?
>
> Not like that in C++. Since Ruby frees all memory automatic through its
> garbage collection, it does not need destructors.
>
> You can use ObjectSpace.define_finalizer to define a method that will be
called
> when an object is garbage collected. That is somewhat similar to a
destructor,
> but note that there can be a long delay between your last use of the
object and
> the start of garbage collection -- that may not be what you want.
>
> In some cases, it is better to define a method that does what you want
> (i.e. File.close) than to do it automatically in a finalizer.
>
> // Niklas
>
>

In This Thread