[#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: Range on strings.

From: "David A. Black" <dblack@...>
Date: 2010-05-17 15:01:12 UTC
List: ruby-talk #362868
Hi --

On Mon, 17 May 2010, Robert Klemme wrote:

> 2010/5/17 David A. Black <dblack@rubypal.com>:
>> Hi --
>>
>> On Fri, 14 May 2010, Vikrant Chaudhary wrote:
>>
>>> Hi,
>>> If I do -
>>>
>>> ('A'..'Z').include?('AA')
>>>
>>> It returns "true", while
>>>
>>> ('A'..'Z').to_a.include?('AA')
>>>
>>> (of course) returns "false". Is it intentional or possibly a bug?
>>> I'm using ruby 1.8.7 (2010-01-10 patchlevel 249) [x86_64-linux] on
>>> Ubuntu 10.04 x64
>>
>> As per the other answers, it's because ('A'..'Z').to_a is an array of
>> discrete values, whereas ('A'..'Z') is a range with a start and end.
>> I'll just add that in Ruby 1.9, things have changed so that include?
>> on a range is, I think, the same as .to_a.include? and the behavior of
>> the old include? is found in Range#cover?
>>
>> $ ruby191 -e 'p(("A".."Z").include?("AA"))'
>> false
>> $ ruby191 -e 'p(("A".."Z").cover?("AA"))'
>> true
>>
>> include? is also available under the name member?, which I think is a
>> little clearer (both because include? used to mean something else, and
>> because being a "member" of a range doesn't really make sense so it
>> almost has to mean something other than just being within the range).
>
> Throwing just my cent in here: I believe the solution in 1.9.* is
> better because here behavior of #include? is consistent with other
> collection types: e.include?(x) == true <=> e.any? {|y| x == y} in
> other words, #include? is true only if the element is also seen during
> iteration.

Although as Rick points out:

   $ ruby191 -e "p((1..10).include?(3.4))"
   true

which I hadn't taken into account in my too-simple summary of 1.9's
Range#include?. I'm not sure what the underlying principle is that
causes that last case to be true while the "A".."Z" including "AA" is
false, though.


David

-- 
David A. Black, Senior Developer, Cyrus Innovation Inc.

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