[#144186] Re: array of object insert polices — "Pe, Botp" <botp@...>

dave [mailto:dave.m@email.it] wrote:

14 messages 2005/06/01

[#144206] Implementing a Read-Only array — Gavin Kistner <gavin@...>

Right up front, let me say that I realize that I can't prevent

14 messages 2005/06/01

[#144224] Method Chaining Issues — "aartist" <aartist@...>

try this:

28 messages 2005/06/01
[#144231] Re: Method Chaining Issues — "Phrogz" <gavin@...> 2005/06/01

This is a FAQ, though no page on the RubyGarden wiki seems to address

[#144240] Re: Method Chaining Issues — Nikolai Weibull <mailing-lists.ruby-talk@...> 2005/06/01

Phrogz wrote:

[#144230] ternary operator confusion — Belorion <belorion@...>

I don't know if this is "improper" use of the ternary operator, but I

19 messages 2005/06/01
[#144233] Re: ternary operator confusion — "Phrogz" <gavin@...> 2005/06/01

true ? a.push(1) : a.push(2)

[#144257] Re: ternary operator confusion — "Marcel Molina Jr." <marcel@...> 2005/06/01

On Thu, Jun 02, 2005 at 01:40:23AM +0900, Phrogz wrote:

[#144263] Re: ternary operator confusion — Eric Mahurin <eric_mahurin@...> 2005/06/01

--- "Marcel Molina Jr." <marcel@vernix.org> wrote:

[#144453] RubyScript2Exe and GUI toolkits — Erik Veenstra <pan@...>

13 messages 2005/06/03

[#144487] Building a business case for Ruby — Joe Van Dyk <joevandyk@...>

Hi,

29 messages 2005/06/03

[#144535] ruby-dev summary 26128-26222 — Minero Aoki <aamine@...>

Hi all,

11 messages 2005/06/04

[#144579] Package, a future replacement for setup.rb and mkmf.rb — Christian Neukirchen <chneukirchen@...>

29 messages 2005/06/04

[#144672] newbie read.scan (?) question — "Bruce D'Arcus" <bdarcus.lists@...>

Hi,

16 messages 2005/06/06

[#144691] making a duck — Eric Mahurin <eric_mahurin@...>

Regarding duck-typing... Is there an easy way make a "duck"?

27 messages 2005/06/06

[#144867] ruby-wish@ruby-lang.org mailing list — dave <dave.m@...>

19 messages 2005/06/08
[#144870] Re: [PROPOSAL] ruby-wish@ruby-lang.org mailing list — "Robert Klemme" <bob.news@...> 2005/06/08

Austin Ziegler wrote:

[#144890] RubyStuff: The Ruby Shop for Ruby Programmers — James Britt <james_b@...>

Announcing the formal grand opening of Ruby Stuff: The Ruby Shop for

36 messages 2005/06/08

[#144966] python/ruby benchmark. — "\"</script>" <groleo@...>

I took a look at

78 messages 2005/06/09
[#144967] Re: python/ruby benchmark. — gabriele renzi <surrender_it@...> 2005/06/09

"</script> ha scritto:

[#144974] Re: python/ruby benchmark. — Lothar Scholz <mailinglists@...> 2005/06/09

Hello gabriele,

[#144977] Re: python/ruby benchmark. — Kent Sibilev <ksruby@...> 2005/06/09

Java is an order of magnitude faster than Ruby. The development of a

[#144980] Re: python/ruby benchmark. — Lothar Scholz <mailinglists@...> 2005/06/09

Hello Kent,

[#144983] Re: python/ruby benchmark. — "Ryan Leavengood" <mrcode@...> 2005/06/09

Lothar Scholz said:

[#145196] Re: python/ruby benchmark(don't shoot the messenger) — ptkwt@... (Phil Tomson) 2005/06/12

In article <9e7db91105061106485b68d629@mail.gmail.com>,

[#145207] Re: python/ruby benchmark(don't shoot the messenger) — Steven Jenkins <steven.jenkins@...> 2005/06/12

Phil Tomson wrote:

[#145212] Re: python/ruby benchmark(don't shoot the messenger) — Austin Ziegler <halostatue@...> 2005/06/12

On 6/12/05, Steven Jenkins <steven.jenkins@ieee.org> wrote:

[#145219] Re: python/ruby benchmark(don't shoot the messenger) — Steven Jenkins <steven.jenkins@...> 2005/06/12

Austin Ziegler wrote:

[#145223] Re: python/ruby benchmark(don't shoot the messenger) — Austin Ziegler <halostatue@...> 2005/06/12

On 6/12/05, Steven Jenkins <steven.jenkins@ieee.org> wrote:

[#145240] Re: python/ruby benchmark(don't shoot the messenger) — Steven Jenkins <steven.jenkins@...> 2005/06/12

Austin Ziegler wrote:

[#145241] Re: python/ruby benchmark(don't shoot the messenger) — Austin Ziegler <halostatue@...> 2005/06/13

On 6/12/05, Steven Jenkins <steven.jenkins@ieee.org> wrote:

[#145000] RDoc

Hi, I have a question. When I compiled ruby-1.8.2

13 messages 2005/06/09
[#145003] Re: RDoc — Eric Hodel <drbrain@...7.net> 2005/06/09

On 09 Jun 2005, at 13:55, Jesffffas Antonio Sfffe1nchez A. wrote:

[#145238] finding Hash subsets based on key value — "ee" <erik.eide@...>

Hi

17 messages 2005/06/12

[#145304] PDF::Writer 1.0 (version 1.0.1) — Austin Ziegler <halostatue@...>

= PDF::Writer

21 messages 2005/06/13
[#145411] Re: [ANN] PDF::Writer 1.0 (version 1.0.1) — Jason Foreman <threeve.org@...> 2005/06/14

No love from PDF::Writer on Mac OS X 10.4.1. I hope to get this fixed

[#145420] Re: [ANN] PDF::Writer 1.0 (version 1.0.1) — Austin Ziegler <halostatue@...> 2005/06/14

On 6/14/05, Jason Foreman <threeve.org@gmail.com> wrote:

[#145432] Re: [ANN] PDF::Writer 1.0 (version 1.0.1) — Jamis Buck <jamis@37signals.com> 2005/06/15

On Jun 14, 2005, at 5:11 PM, Austin Ziegler wrote:

[#145339] survey: what editor do you use to hack ruby? — Lowell Kirsh <lkirsh@...>

I've been having a tough time getting emacs set up properly with ruby

62 messages 2005/06/14

[#145390] Ruby and recursion (Ackermann benchmark) — ptkwt@... (Phil Tomson)

14 messages 2005/06/14

[#145586] How to make a browser in Ruby Tk — sujeet kumar <sujeetkr@...>

Hi

13 messages 2005/06/16

[#145636] Super-scalar Optimizations — "Phrogz" <gavin@...>

I was looking over the shoulder of a C++ coworker yesterday, when he

14 messages 2005/06/16

[#145677] Truth maintenance system in Ruby — "itsme213" <itsme213@...>

Anyone know of any kind of truth-maintenance system implemented in Ruby (or,

12 messages 2005/06/17

[#145720] Frameless RDoc template ('technology preview') — ES <ruby-ml@...>

Hi!

17 messages 2005/06/17

[#145779] Newbe questions... — "Chuck Brotman" <brotman@...>

In Ruby Is there a prefered (or otherwise elegant) way to do an inner &

17 messages 2005/06/18

[#145790] GC.disable not working? — Eric Mahurin <eric_mahurin@...>

From what I can tell, GC.disable doesn't work. I'm wanting to

37 messages 2005/06/18
[#145822] Re: GC.disable not working? — ts <decoux@...> 2005/06/19

>>>>> "E" == Eric Mahurin <eric_mahurin@yahoo.com> writes:

[#146024] evaluation of ruby — "Franz Hartmann" <porschefranz@...> 2005/06/21

Hello all,

[#145830] preventing instantiation — "R. Mark Volkmann" <mark@...>

What is the recommended way in Ruby to prevent other classes from creating

13 messages 2005/06/19
[#145831] Re: preventing instantiation — Gavri Fernandez <gavri.fernandez@...> 2005/06/19

On 6/19/05, R. Mark Volkmann <mark@ociweb.com> wrote:

[#145879] x==1 vs 1==x — Gavin Kistner <gavin@...>

I'm against _premature_ optimization in theory, but believe that a

19 messages 2005/06/20
[#145880] Re: x==1 vs 1==x — ts <decoux@...> 2005/06/20

>>>>> "G" == Gavin Kistner <gavin@refinery.com> writes:

[#145943] Chess Variants (II) (#36) — James Edward Gray II <james@...>

I don't want to spoil all the fun, in case anyone is still attempting

12 messages 2005/06/20

[#146038] 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — Michael Tan <mtan1232000@...>

Just new to Ruby since last week, running my same functional program on the windows XP(Pentium M1.5G), the Ruby version is 10 times slower than the Java version. The program is to find the prime numbers like 2, 3,5, 7, 11, 13... Are there setup issues? or it is normal?

47 messages 2005/06/21
[#146044] Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — "Florian Frank" <flori@...> 2005/06/21

Michael Tan wrote:

[#146047] Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — Jim Freeze <jim@...> 2005/06/21

* Florian Frank <flori@nixe.ping.de> [2005-06-22 05:40:14 +0900]:

[#146050] Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — "Ryan Leavengood" <mrcode@...> 2005/06/21

Jim Freeze said:

[#146132] Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — "Mark Thomas" <mrt@...> 2005/06/22

Florian Frank wrote:

[#146064] rubyscript2exe — Joe Van Dyk <joevandyk@...>

Hi,

14 messages 2005/06/21

[#146169] spidering a website to build a sitemap — Bill Guindon <agorilla@...>

I need to spider a site and build a sitemap for it. I've looked

17 messages 2005/06/22

[#146178] traits-0.4.0 - the coffee release — "Ara.T.Howard" <Ara.T.Howard@...>

15 messages 2005/06/22

[#146328] string to Class object — "R. Mark Volkmann" <mark@...>

How can I create a Class object from a String that contains the name of a class?

15 messages 2005/06/24

[#146380] Application-0.6.0 — Jim Freeze <jim@...>

CommandLine - Application and OptionParser

22 messages 2005/06/24

[#146391] ASP.NET vs Ruby on Rails — Stephen Kellett <snail@...>

HI Folks,

21 messages 2005/06/24
[#146457] Re: ASP.NET vs Ruby on Rails — "Dema" <demetriusnunes@...> 2005/06/25

Hi Stephen,

[#146425] speeding up Process.detach frequency — Joe Van Dyk <joevandyk@...>

Is there any way to speed up Process.detach? The ri documentation for

14 messages 2005/06/25

[#146483] I saw the beauty of Ruby Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — Michael Tan <mtan1232000@...>

22 messages 2005/06/26
[#146504] Re: I saw the beauty of Ruby Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — Brad Wilson <dotnetguy@...> 2005/06/26

For comparison, the port of your code to (less than elegant) C#.

[#146515] Re: I saw the beauty of Ruby Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — Florian Gro<florgro@...> 2005/06/26

Brad Wilson wrote:

[#146485] Re: I saw the beauty of Ruby Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds — "Florian Frank" <flori@...> 2005/06/26

Michael Tan wrote:

[#146491] What do you want to see in a Sparklines Library? — Daniel Nugent <nugend@...>

This is sort of an interest gauging/feature request poll.

17 messages 2005/06/26
[#146506] Re: What do you want to see in a Sparklines Library? — Daniel Amelang <daniel.amelang@...> 2005/06/26

See what's already been done before you get too far.

[#146517] Re: What do you want to see in a Sparklines Library? — Daniel Nugent <nugend@...> 2005/06/26

Yup, seen the stuff on RedHanded, I was planning on writing a little

[#146562] RCM - A Ruby Configuration Management System — Michael Neumann <mneumann@...>

Hi all,

22 messages 2005/06/27

[#146630] yield does not take a block — Daniel Brockman <daniel@...>

Under ruby 1.9.0 (2005-06-23) [i386-linux], irb 0.9.5(05/04/13),

48 messages 2005/06/28
[#146666] Re: yield does not take a block — Daniel Brockman <daniel@...> 2005/06/28

Yukihiro Matsumoto <matz@ruby-lang.org> writes:

[#146680] Re: yield does not take a block — Yukihiro Matsumoto <matz@...> 2005/06/28

Hi,

[#146684] Re: yield does not take a block — Eric Mahurin <eric_mahurin@...> 2005/06/28

[#146779] Re: yield does not take a block — "Adam P. Jenkins" <thorin@...> 2005/06/29

Eric Mahurin wrote:

[#146700] Anything in new Eclipse for Rubyists? — "jfry" <jeff.fry@...>

Hey there, I know that a number of folks on the list use Eclipse as

14 messages 2005/06/28

[#146773] Programmers Contest: Fit pictures on a page — hicinbothem@...

GLOSSY: The Summer Programmer Of The Month Contest is underway!

18 messages 2005/06/29

[#146815] shift vs. slice!(0) and others — Eric Mahurin <eric_mahurin@...>

I just did some benchmarking of various ways to insert/delete

12 messages 2005/06/29

Re: [SOLUTION] Chess Variants (I) (#35)

From: Gavin Kistner <gavin@...>
Date: 2005-06-15 14:10:16 UTC
List: ruby-talk #145489
My solution can be found at http://phrogz.net/RubyLibs/GKChess.rb

My solution does not allow castling or en-passant. (Castling would be  
far easier if you didn't have to determine if any other piece  
challenged the intermediary space :p En-passant is annoying because  
of the turn-based restriction.) It also does not check for checkmate.

Things I'm proud of:
* Subclassing Piece for each type to delegate the possible moves  
calculation.

* Some of the DRY stuff in calculating possible moves along various  
axes for everyone but the Pawn

* Some nice robustness and messages when you try to pick an invalid  
piece, or send a piece somewhere it can't go. (After you pick the  
piece to move, if you give it an invalid destination it tells you  
what moves are legal.)

* Subclassing RuntimeError for the first time only and using it to my  
advantage. (OutOfBoundsError and IllegalMoveError).

I'm actually not sure if I should be proud of the last one...is it  
'good' to run code you know will throw an error and then catch that  
as a way of detecting bounds, versus calculating the bounds properly?

When calculating the moves that a rook could do, for example, I moved  
along a particular axis until I found another piece, adding each  
square to the possible moves. However, if no pieces existed between  
me and the edge of the board, I let the algorithm charge off the edge  
of the board, waiting for the Move constructor to throw an  
OutOfBoundsError as another way to let me know that it was time to stop.




Things I'm not so proud of:
* Sometimes I use 'a2' to access information, sometimes ['a','2'];  
consequently a lot of my methods have code like:
   def foo( col, row=nil )
       col, row = (col.to_s+row.to_s).split('')
   so that I can pass the information around as separate arguments,  
one string, or an array. Tricky, but hacky.

* The pieces know what they are allowed to do on the board...but  
don't know anything about check or checkmate. That's up to the Board.  
Consequently, pieces think they can make a move that would result in  
self-check, and list those choices among the options. The error  
message when you try to make a move that would put your own king in  
check is not helpful.

* I use #deep_clone with the Marshal hack to set up a scenario to  
detect check without altering the current board. This feels  
wrong...the board should be able to try out a move and then undo it  
without having to clone itself. (I was concerned about putting pieces  
back on the board afterwards.) Further, when I make the clone, I  
can't the real #move method to try out the change, because that  
method has all sorts of warnings that I'd have to hide. Ugly.


The trickiest part for me (that I ended up not solving) is figuring  
out where the logic of the game goes. Shouldn't each piece know what  
it can do? But then it needs to know about the entire board. And (for  
en-passant) the recent history of moves for each piece. Ugly.


Thanks for a challenging puzzle. Having refactored some pieces twice,  
it was a very useful exercise in thinking about roles and  
responsibilities, and my own need to plan a little more before coding.

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