[#362083] Teaching Programming Languages (including Ruby) — Samuel Williams <space.ship.traveller@...>

Hello,

20 messages 2010/05/02

[#362098] Main working window for Ruby is DOS? — Kaye Ng <sbstn26@...>

I know nothing about programming and am not a techy person, so please

16 messages 2010/05/03

[#362116] School teacher still at it learning programming language — Hilary Bailey <my77elephants@...>

Now I while glimpsing at the beauty of Ruby, there is the software of

11 messages 2010/05/03

[#362166] Something I expected to work, but didn't! — Kurtis Rainbolt-greene <kurtisrainboltgreene@...>

irb(main):001:0> x = 2

11 messages 2010/05/04

[#362215] for-in vs. map closures — Mike Austin <mike_ekim@...>

I was experimenting with closures and JavaScript's and Ruby's

11 messages 2010/05/05

[#362286] ri on sqlite — Intransition <transfire@...>

What do others think of a creating a new ri tool which uses a SQLite

17 messages 2010/05/06

[#362341] ease of porting (translating) ruby to C (vs. python)? — bwv549 <jtprince@...>

In a very small bioinformatics group I know of, they are deciding

17 messages 2010/05/07

[#362375] Strings iteration — Viorel <viorelvladu@...>

I have some names like aaxxbbyy where xx is '01'..'10' and yy is also

14 messages 2010/05/08

[#362425] Any future for curses applications/toolkits like rbcurse ? — "R. Kumar" <sentinel.2001@...>

Have apps moved over to the web (or GUI) totally ? Will there be any

21 messages 2010/05/10
[#362441] Re: Any future for curses applications/toolkits like rbcurse ? — botp <botpena@...> 2010/05/10

On Mon, May 10, 2010 at 2:13 PM, R. Kumar <sentinel.2001@gmx.com> wrote:

[#362448] Re: Any future for curses applications/toolkits like rbcurse ? — "R. Kumar" <sentinel.2001@...> 2010/05/10

interface and/or the installation itself is terrible.

[#362458] Re: Any future for curses applications/toolkits like rbcurse ? — botp <botpena@...> 2010/05/10

On Mon, May 10, 2010 at 10:28 PM, R. Kumar <sentinel.2001@gmx.com> wrote:

[#362460] Re: Any future for curses applications/toolkits like rbcurse ? — "R. Kumar" <sentinel.2001@...> 2010/05/10

botp wrote:

[#362463] Re: Any future for curses applications/toolkits like rbcurse ? — "R. Kumar" <sentinel.2001@...> 2010/05/10

Strange. I cant push a gem even after yanking.

[#362452] Unit Test of method calling system() - how? — Martin Hansen <mail@...>

How can I unit test the two methods:

16 messages 2010/05/10

[#362498] In Ruby, can the coerce() method know what operator it is th — Jian Lin <blueskybreeze@...>

In Ruby, it seems that a lot of coerce() help can be done by

12 messages 2010/05/11
[#362546] Re: In Ruby, can the coerce() method know what operator it is th — Caleb Clausen <vikkous@...> 2010/05/11

On 5/10/10, Jian Lin <blueskybreeze@gmail.com> wrote:

[#362611] Re: In Ruby, can the coerce() method know what operator it is th — Colin Bartlett <colinb2r@...> 2010/05/12

On Tue, May 11, 2010 at 4:46 PM, Caleb Clausen <vikkous@gmail.com> wrote:

[#362657] Asynchronous HTTP request — Daniel DeLorme <dan-ml@...42.com>

Does anyone know how to do the following, but without threads, purely

28 messages 2010/05/13

[#362718] Range on strings. — Vikrant Chaudhary <nasa42@...>

Hi,

13 messages 2010/05/14

[#362787] class best way for getters ? — unbewusst.sein@... (Une B騅ue)

i have a class "HFSFile" initialized by a parsed string

12 messages 2010/05/15

[#362979] curl library? — Xeno Campanoli / Eskimo North and Gmail <xeno.campanoli@...>

Two questions:

14 messages 2010/05/18
[#362980] Re: curl library? — Xeno Campanoli / Eskimo North and Gmail <xeno.campanoli@...> 2010/05/18

On 10-05-18 02:35 PM, Xeno Campanoli / Eskimo North and Gmail wrote:

[#362982] Re: curl library? — Luis Parravicini <lparravi@...> 2010/05/18

On Tue, May 18, 2010 at 6:56 PM, Xeno Campanoli / Eskimo North and

[#362984] Re: curl library? — Xeno Campanoli / Eskimo North and Gmail <xeno.campanoli@...> 2010/05/18

Well, I got that -dev thing installed with apt-get, and then I tried again and

[#363027] Retrieve instance — Walle Wallen <walle.sthlm@...>

Quick question. Can I somehow retrieve the instance of the class Test in

11 messages 2010/05/19

[#363076] Scrape javascript content — Phil Mcdonnell <phil.a.mcdonnell@...>

I'm trying to scrape a page that hides some data behind a javascript

11 messages 2010/05/20

[#363115] OMG, why are there so many Strings in ObjectSpace! — timr <timrandg@...>

I was playing around looking at ObjectSpace in irb and was astounded

14 messages 2010/05/21

[#363225] Redefine a Class? — Mark T <paradisaeidae@...>

Currently this raises: superclass mismatch for class Soda (TypeError)

12 messages 2010/05/25

[#363240] Funny IO.select behaviour — Dennis Nedry <dennis@...>

I've been debugging my full screen console ruby editor.

13 messages 2010/05/25

[#363348] Ruby as Client Side Language in Web Browser (replacing JS) — "Simone R." <k5mmx@...>

Hi everybody,

17 messages 2010/05/27

[#363412] A better way to write this function? — Jason Lillywhite <jason.lillywhite@...>

Here is my attempt at Newton's second law in Ruby:

14 messages 2010/05/28

[#363417] Interrupting the evaluation of a ruby script — Emmanuel Emmanuel <emmanuel.bacry@...>

This is my problem :

12 messages 2010/05/28
[#363447] Re: Interrupting the evaluation of a ruby script — Branden Tanga <branden.tanga@...> 2010/05/28

Emmanuel Emmanuel wrote:

[#363483] Re: Interrupting the evaluation of a ruby script — Emmanuel Emmanuel <emmanuel.bacry@...> 2010/05/29

[#363426] A complete beginners question — Ant Walliams <anthonywainwright@...>

Hi there,

19 messages 2010/05/28

[#363432] Dynamic SVG with Ruby/Tk — Yotta Meter <spam@...>

The example I'm looking for in regards to ruby/SVG differs from the

14 messages 2010/05/28

[#363467] Date.today problem on linux with Ruby 1.8.6 — Jarmo Pertman <jarmo.p@...>

Hello.

10 messages 2010/05/29

[#363524] enumerator problem in 1.9.1 — Bug Free <amberarrow@...>

The following line:

19 messages 2010/05/31
[#363528] Re: enumerator problem in 1.9.1 — botp <botpena@...> 2010/05/31

On Mon, May 31, 2010 at 9:04 AM, Bug Free <amberarrow@yahoo.com> wrote:

[#363533] Re: enumerator problem in 1.9.1 — Robert Klemme <shortcutter@...> 2010/05/31

2010/5/31 botp <botpena@gmail.com>:

Re: Retrieve instance

From: David Masover <ninja@...>
Date: 2010-05-19 19:19:04 UTC
List: ruby-talk #363047
On Wednesday, May 19, 2010 01:53:58 pm Robert Klemme wrote:
> 2010/5/19 David Masover <ninja@slaphack.com>:
> > On Wednesday, May 19, 2010 09:54:03 am Robert Klemme wrote:
> >> 2010/5/19 Walle Wallen <walle.sthlm@gmail.com>:
> >> > Quick question. Can I somehow retrieve the instance of the class Test
> >> > in which the variable con exists. As in the example below, can I
> >> > retrieve the instance of Test from the variable p?
> >> 
> >> There is no general mechanism that would allow to follow an object
> >> reference backwards.  If there was, that mechanism would yield
> >> multiple instances because a object can be referenced by any number of
> >> other objects.
> > 
> > Well, there's ObjectSpace. Probably not general (cross-interpreter), but
> > it does work if you actually need this functionality.
> 
> Even with ObjectSpace you cannot really travel a reference backwards.
> You're merely forced to look at all objects (of a kind) and figure
> whether any of them references (forward) the one whose parent you are
> looking for as your code nicely demonstrates.

I suppose. I still tend to think of things like this, because the Internet is 
actually eroding that kind of assumption. Once upon a time, I might have 
considered having another identity online, but occasionally linking back to my 
"real" identity. Basically, people who know me as SecretGuy could find out who 
I actually am, but not the other way around, with the assumption that friends 
and family from reality wouldn't be likely to stumble on SecretGuy.

But the idea of one-way links on the Web is just as absurd as the idea of one-
way links in SQL. The assumption that no one would ever look through the 
entire Internet for my alter-egos, or stumble on one by chance, is destroyed 
by the fact that Google already indexes the entire Internet, turning forward 
references into backward references.

Something similar could be done with ObjectSpace, but it'd be even more 
ridiculous:

Thread do
  loop do
    ObjectSpace.each_object(Test) do |t|
      con.instance_variable_set :@__test__, t
    end
    sleep 30
  end
end

def find_con con
  con.instance_variable_get :@__test__
end

I'll leave it as an exercise to the reader why that's so bad, and how it might 
be improved on.

But this can't be good for my sanity.

> > Just do what Robert Klein said.
> 
> Erm, who?

Whoops... Actually, what is the etiquette on a forum like this? Should I just 
say "Robert"?

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