[#321574] Regular Expressions — Mmcolli00 Mom <mmc_collins@...>

Hi everyone.

15 messages 2008/12/01

[#321655] Ruby cgi script — ZippySwish <fischer.jan@...>

I put "script.rb" into the cgi-bin folder of my webhost, but nothing's

12 messages 2008/12/02

[#321733] FFI 0.2.0 — "Wayne Meissner" <wmeissner@...>

Greetings Rubyists.

20 messages 2008/12/03

[#321920] Force a program to stop if runtime exceeds given duration — Aldric Giacomoni <"aldric[remove]"@...>

Any idea how to do that?

25 messages 2008/12/04
[#321924] Re: Force a program to stop if runtime exceeds given duration — "Glen Holcomb" <damnbigman@...> 2008/12/04

On Thu, Dec 4, 2008 at 10:04 AM, Aldric Giacomoni <"aldric[remove]"@

[#322011] Re: Force a program to stop if runtime exceeds given duration — Ron Fox <fox@...> 2008/12/05

See http://www.ruby-doc.org/core-1.9/classes/Process.html#M003012

[#322016] Re: Force a program to stop if runtime exceeds given duration — Aldric Giacomoni <"aldric[remove]"@...> 2008/12/05

Everybody automatically assumes that rubyists are using Linux - sadly,

[#321969] Are there any Ruby Technical Writers here? — Vito Fontaine <vito.matro@...>

I am a beginner with Ruby who was interested in writing some programs.

15 messages 2008/12/04
[#321975] Re: Are there any Ruby Technical Writers here? — Robert Klemme <shortcutter@...> 2008/12/04

On 04.12.2008 22:43, Vito Fontaine wrote:

[#321984] Re: Are there any Ruby Technical Writers here? — Vito Fontaine <vito.matro@...> 2008/12/05

Robert Klemme wrote:

[#322014] Proximity searches in Ruby — Stuart Clarke <stuart.clarke1986@...>

Does Ruby have the ability to perform proximity searches on data. For

14 messages 2008/12/05
[#322056] Re: Proximity searches in Ruby — Ilan Berci <coder68@...> 2008/12/05

No proximity searches with 1.8.. you would need a full fledged text

[#322073] shoes 2 (raisins) is go. — _why <why@...>

Salutations and hi.

13 messages 2008/12/06

[#322260] Help on algorythm — Helder Oliveira <hrpoliveira@...>

Guys i have been trying to make this algorythm but with no sucess, can

13 messages 2008/12/09
[#322261] Re: Help on algorythm — "Glen Holcomb" <damnbigman@...> 2008/12/09

On Tue, Dec 9, 2008 at 7:44 AM, Helder Oliveira <hrpoliveira@gmail.com>wrote:

[#322283] Completely new programmer lacks direction — Cameron Carroll <ubernoobs@...>

Hi. I recently picked up a beginning ruby book, having only lightly

17 messages 2008/12/09

[#322285] compare 2 text files - check for difference - Please help — Mmcolli00 Mom <mmc_collins@...>

Hi. I want to take two files that are supposed to be identical, then ook

12 messages 2008/12/09
[#322301] Re: compare 2 text files - check for difference - Please help — Brian Candler <b.candler@...> 2008/12/09

Mmcolli00 Mom wrote:

[#322306] Re: compare 2 text files - check for difference - Please help — Mmcolli00 Mom <mmc_collins@...> 2008/12/09

require 'diff/lcs/Array'

[#322417] why Hash corrupts 'key' object ? — Dmitry Perfilyev <dmitry1976@...>

Hi, I have next script:

13 messages 2008/12/10

[#322464] Q: FFI and C++? — Jeremy Henty <onepoint@...>

If I want to wrap a C++ library using FFI, can it cope with the name

14 messages 2008/12/11

[#322516] Invoking Ruby code from a low-level language? — Alex Fulton <a.fulton@...>

Hi, my sincerest apologies if this question has already been answered

11 messages 2008/12/11

[#322529] parallel method return value — Louis-Philippe <default@...>

Hi all,

17 messages 2008/12/12

[#322566] How to run background processes (more than 1 worker) parallely. — "Deepak Gole" <deepak.gole8@...>

Hi

10 messages 2008/12/12

[#322624] singleton methods vs. meta instance methods — Daniel DeLorme <dan-ml@...42.com>

If I understand the ruby object model correctly, then an object's

15 messages 2008/12/13

[#322705] ruby 1.9.1: Encoding trouble: broken US-ASCII String — Tom Link <micathom@...>

Hi,

22 messages 2008/12/14

[#322710] Help with an "easy" regular expression substitution — Iñaki Baz Castillo <ibc@...>

Hi, I'm getting crazy to get a theorically easy substitution:

16 messages 2008/12/14

[#322819] Pure Ruby Zlib::GzipWriter — Daniel Berger <djberg96@...>

Hi,

53 messages 2008/12/15
[#324442] Re: Pure Ruby Zlib::GzipWriter — Luis Lavena <luislavena@...> 2009/01/10

On Jan 9, 9:26m, "Charles L." <aquas...@gmail.com> wrote:

[#323877] Re: Pure Ruby Zlib::GzipWriter — Daniel Berger <djberg96@...> 2009/01/03

[#323903] Re: Pure Ruby Zlib::GzipWriter — Roger Pack <rogerpack2005@...> 2009/01/04

[#324011] Re: Pure Ruby Zlib::GzipWriter — Daniel Berger <djberg96@...> 2009/01/05

[#322987] Using ruby hash on array — Stuart Clarke <stuart.clarke1986@...>

I would like to process some data from an array and using hash to

14 messages 2008/12/17

[#323085] Ruby and Rails supported on 10gen — "Jim Menard" <jim.menard@...>

http://www.10gen.com/blog/2008/12/ruby-support-on-10gen

11 messages 2008/12/18

[#323166] Dreaming of a Ruby Christmas (#187) — Matthew Moss <matt@...>

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

11 messages 2008/12/19

[#323204] get first and last line from txt file - how? — Mmcolli00 Mom <mmc_collins@...>

I have txt file with date/time stamps only. I want to grab the first

19 messages 2008/12/20
[#323205] Re: get first and last line from txt file - how? — Tim Hunter <TimHunter@...> 2008/12/20

Mmcolli00 Mom wrote:

[#323207] Re: get first and last line from txt file - how? — "Yaser Sulaiman" <yaserbuntu@...> 2008/12/20

I'm just wondering..

[#323273] how to make installing Ruby easier for amateurs — Tom Cloyd <tomcloyd@...>

Greetings!

21 messages 2008/12/22

[#323312] Name that data structure! — Simon Chiang <simon.a.chiang@...>

I'm using a data structure that I'm sure has been implemented and

18 messages 2008/12/22
[#323314] Re: Name that data structure! — "Gregory Brown" <gregory.t.brown@...> 2008/12/22

On Mon, Dec 22, 2008 at 5:38 PM, Simon Chiang <simon.a.chiang@gmail.com> wrote:

[#323342] Are all Ruby built-in objects thread safe? — "Just Another Victim of the Ambient Morality" <ihatespam@...>

Are all built-in objects thread safe? For example, if I have an array

23 messages 2008/12/23
[#323346] Re: Are all Ruby built-in objects thread safe? — Yukihiro Matsumoto <matz@...> 2008/12/23

Hi,

[#323519] What does 'Monkey Patching' exactly Mean in Ruby? — "Yaser Sulaiman" <yaserbuntu@...>

According to Wikipedia, a monkey patch[1] is:

36 messages 2008/12/27
[#323813] Re: What does 'Monkey Patching' exactly Mean in Ruby? — Jg W Mittag <JoergWMittag+Usenet@...> 2009/01/02

Phlip wrote:

[#323832] Re: What does 'Monkey Patching' exactly Mean in Ruby? — "David A. Black" <dblack@...> 2009/01/02

Hi --

[#323644] Why Ruby? — Mike Stephens <rubfor@...>

I have never seen or heard of Ruby in a corporate context. The single

35 messages 2008/12/30

[#323668] Ruby 1.9.1 RC1 is released — "Yugui (Yuki Sonoda)" <yugui@...>

Hi, folks

21 messages 2008/12/30

Re: dynamic programming

From: Frank Tao <dalfrank@...>
Date: 2008-12-03 19:59:15 UTC
List: ruby-talk #321825
Frank Tao wrote:
> # I have a class Adam
> # I want to modify the method("m_a") so that it will return the cached
> result
> # If no cached result is available, then return the original result
> # I want to create a class method(AKA: macro) to make it DRY
> #
> # So far, I have issues like
> # 1) dynmically define class variable
> # 2) failed to include a module inside a method of a class
> #
> # Any suggestion or comments will be appreciated
> #
> class Adam
>   def self.m_a
>     ["Adam#m_a"]
>   end
> end
> 
> class CachedAdam
>   caching_method :adam, :m_a
> 
>   def self.caching_method
>     # this method should do something to make the following codes
>   end
> end
> 
> 
> ## CachedAdam#caching_method should make and load the following codes
> #
> # module AdamWithCache
> #   def m_a_with_cache
> #     CachedAdam.get_cached_m_a || m_a_without_cache
> #   end
> #   def self.include(base)
> #     base.alias_method_chain :m_a, :cache
> #   end
> # end
> # Adam.class_eval{ include AdamWithCache }
> #
> # class CachedAdam
> #   def self.get_cached_m_a( adam_id )
> #     @@cache && @@cache[adam_id]
> #   end
> #
> #   def self.set_cached_m_a(hash_list)
> #     hash_list.each do |k,v|
> #       @@cache ||={}  # failed, any suggestion?
> #       @@cache[k] = v
> #     end
> #   end
> # end

THANKS FOR YOUR HELPFUL RESPONSE. I FOUND THAT MY ORIGINAL HAD SOME 
MISTAKES AND THEREFORE DID NOT REFLECT EXACTLY WHAT I WANT.
SO I UPDATE IT AS FOLLOWS:

class Adam
  def m_a
    "a"
  end
end

class CachedMethod
  @@cached_variables = {}

  def self.caching_method(model, method)
    model, method = model.to_s, method.to_s
    @@cached_variables["#{model}_#{method}_cache"] = {}

    (class << self; self; end).instance_eval do
      define_method "set_cached_#{model}_#{method}" do |hash_list|
        hash_list.each do |k,v|
          @@cached_variables["#{model}_#{method}_cache"][k] = v
        end
      end
      define_method "get_cached_#{model}_#{method}" do |model_id|
        @@cached_variables["#{model}_#{method}_cache"] &&
          @@cached_variables["#{model}_#{method}_cache"][model_id]
      end
    end


    #
    # Purpose: create a module and let it be included by Adam class
    # NOT WORKING, any suggestion?
    self.class_eval <<-EOD
     module AdamWithCache
       def m_a_with_cache
         CachedMethod.get_cached_adam_m_a(self.id) || m_a_without_cache
       end
       def self.include(base)
         base.alias_method_chain :m_a, :cache
       end
     end
     Adam.class_eval{ include AdamWithCache }
    EOD
  end

  def self.reset
    @@cached_variables = {}
  end

  self.caching_method :adam, :m_a

end

#module AdamWithCache
#  def m_a_with_cache
#    CachedMethod.get_cached_adam_m_a(self.id) || m_a_without_cache
#  end
#  def self.include(base)
#    base.alias_method_chain :m_a, :cache
#  end
#end
#Adam.class_eval{ include AdamWithCache }


#
#Example usage:
#=============================================

puts @adam_1 = Adam.new  #==> assume: @adam.id == 1
puts @adam_2 = Adam.new  #==> assume: @adam.id == 2
puts @adam_3 = Adam.new  #==> assume: @adam.id == 3
puts @adam_1.m_a         #==> "a"
puts @adam_2.m_a         #==> "a"
puts @adam_3.m_a         #==> "a"
puts @adam_1.id         #==> 1
puts @adam_2.id         #==> 2
puts @adam_3.id         #==> 3

hash_list = {@adam_1.id => "b", @adam_2.id => "c"}
CachedMethod.set_cached_adam_m_a(hash_list)
puts CachedMethod.get_cached_adam_m_a(@adam_1.id)  #==> "b"
puts @adam_1.m_a         #==> "b"    !!! DID NOT OUTPUT AS I EXPECTED
puts @adam_2.m_a         #==> "c"    !!! DIDO
puts @adam_3.m_a         #==> "a"    !!! DIDO

CachedMethod.reset
puts @adam_1.m_a         #==> "a"
puts @adam_2.m_a         #==> "a"
puts @adam_3.m_a         #==> "a"
-- 
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