[#377882] remove array bracket — Kamarulnizam Rahim <niezam54@...>

Hi when i run my script, the output is as followed:

18 messages 2011/02/02

[#378046] Setter method for Hash value — Rolf Pedersen <rolfhsp@...>

Hi

20 messages 2011/02/03
[#378052] Re: Setter method for Hash value — Brian Candler <b.candler@...> 2011/02/03

Rolf Pedersen wrote in post #979431:

[#378056] Re: Setter method for Hash value — Rolf Pedersen <rolfhsp@...> 2011/02/03

Hi Brian (and others who have contributed with suggestions along the same

[#378144] C extension: How to check if a VALUE is still alive (not being GC'ed)? — Iñaki Baz Castillo <ibc@...>

Hi, I'm coding an async DNS resolver for EventMachine based on udns (a

13 messages 2011/02/05
[#378171] Re: C extension: How to check if a VALUE is still alive (not being GC'ed)? — Tony Arcieri <tony.arcieri@...> 2011/02/06

On Sat, Feb 5, 2011 at 4:02 PM, Iki Baz Castillo <ibc@aliax.net> wrote:

[#378179] Re: C extension: How to check if a VALUE is still alive (not being GC'ed)? — Iñaki Baz Castillo <ibc@...> 2011/02/06

2011/2/6 Tony Arcieri <tony.arcieri@medioh.com>:

[#378199] Choosing an office suite — Hilary Bailey <my77elephants@...>

I am trying to decide which office suite to choose from. The only

30 messages 2011/02/07
[#378229] Re: Choosing an office suite — Phillip Gawlowski <cmdjackryan@...> 2011/02/07

On Mon, Feb 7, 2011 at 11:15 AM, Hilary Bailey <my77elephants@gmail.com> wrote:

[#378202] making hash key from arrays — Arihan Sinha <arihan_sinha@...>

Hi All,

11 messages 2011/02/07

[#378254] "permission denied" happening too often — Peter Bailey <pbailey@...>

Hello,

15 messages 2011/02/08
[#378256] Re: "permission denied" happening too often — Anurag Priyam <anurag08priyam@...> 2011/02/08

> I've got Ruby scripts that have been working fine for years now. But,

[#378257] Re: "permission denied" happening too often — Markus Schirp <mbj@...> 2011/02/08

You can also try to strace your script. In the logs you'll find the system

[#378259] Re: "permission denied" happening too often — Peter Bailey <pbailey@...> 2011/02/08

Markus Schirp wrote in post #980289:

[#378307] undefined class/module YAML::PrivateType - Error — "Priya D." <dharsininitt@...>

Hi,

11 messages 2011/02/09

[#378341] System calls with ` in parameters — "Gerad S." <geradstemke@...>

Hi All,

12 messages 2011/02/09

[#378618] Defining class methods — Tony Arcieri <tony.arcieri@...>

It seems there are 3 ways of defining class methods (at least in common

12 messages 2011/02/16

[#378685] LiveAST: a pure Ruby 1.9.2 library obtaining live abstract syntax trees — "James M. Lawrence" <quixoticsycophant@...>

= LiveAST

13 messages 2011/02/18

[#378753] posix_mq : Problem installing on HPUX — Tadeusz Bochan <tad.bochan@...>

Hello,

13 messages 2011/02/20

[#378890] a, b = Array.new(2).map!{|x| data.dup} — Stefan Salewski <mail@...>

I think I can replace this code

19 messages 2011/02/23
[#378892] Re: a, b = Array.new(2).map!{|x| data.dup} — niklas | brueckenschlaeger <niklas@...> 2011/02/23

Are you sure you can't rework your code to *not* copy data 5x? I assume

[#378899] Re: a, b = Array.new(2).map!{|x| data.dup} — Stefan Salewski <mail@...> 2011/02/23

On Thu, 2011-02-24 at 07:00 +0900, niklas | brueckenschlaeger wrote:

[#378941] Automatic question generator libs in Ruby Language — Sniper Abandon <sathish.salem.1984@...>

is there any Automatic question generator libraries in Ruby Language ?

20 messages 2011/02/24
[#379058] Re: Automatic question generator libs in Ruby Language — Sniper Abandon <sathish.salem.1984@...> 2011/02/27

suppose if i have a paragraph (arround 250 words)

[#379172] Re: Automatic question generator libs in Ruby Language — Shadowfirebird <shadowfirebird@...> 2011/03/01

> i want to get all the possible question from that paragraph

[#379174] Re: Automatic question generator libs in Ruby Language — Peter Zotov <whitequark@...> 2011/03/01

On Tue, 1 Mar 2011 19:31:36 +0900, Shadowfirebird wrote:

[#379175] Re: Automatic question generator libs in Ruby Language — Adam Prescott <mentionuse@...> 2011/03/01

On Tue, Mar 1, 2011 at 10:55 AM, Peter Zotov <whitequark@whitequark.org>wrote:

[#379177] Re: Automatic question generator libs in Ruby Language — Peter Zotov <whitequark@...> 2011/03/01

On Tue, 1 Mar 2011 20:02:13 +0900, Adam Prescott wrote:

[#379179] Re: Automatic question generator libs in Ruby Language — Adam Prescott <mentionuse@...> 2011/03/01

On Tue, Mar 1, 2011 at 12:28 PM, Peter Zotov <whitequark@whitequark.org>wrote:

[#378949] why is $1 in a grep() equal to nil? — 7stud -- <bbxx789_05ss@...>

class DataSource

16 messages 2011/02/24
[#378953] Re: why is $1 in a grep() equal to nil? — Eric Christopherson <echristopherson@...> 2011/02/25

On Thu, Feb 24, 2011 at 2:59 PM, 7stud -- <bbxx789_05ss@yahoo.com> wrote:

[#378958] parsing rule for this code? — 7stud -- <bbxx789_05ss@...>

1)

11 messages 2011/02/25

[#379000] Symbol#to_proc helping out with #select to beat Scala-s solution — Jarmo Pertman <jarmo.p@...>

Hey!

9 messages 2011/02/25

[#379074] finding a tag in a binary file — rob stanton <tnotnats@...>

I have a binary file in which I'd like to find multiple strings of 10

12 messages 2011/02/27

Re: Calling class method from instance method

From: Anurag Priyam <anurag08priyam@...>
Date: 2011-02-23 14:09:48 UTC
List: ruby-talk #378874
> You see, there's stuff that need to be donne in both cases, in instances
> and in classes. For example:
>
> class SomeClass
> ef self.method
> f file_exists?
> do stuff
> nd
> something need to be donne here, and I need to check if the file
> exists
> I dont want to define a nother class method exactly the same as the
> already declared instance method.
> nd

Since file_exists? is an instance method, it is very likely to return
true/false based on the state of the instance (see below). Calling
file_exists in self.method does not make sense unless its
responsibility is to act on an instance of your class - like a
factory, or processing an instance passed to it as a parameter.

def self.method(object)
  if object.file_exists?
    # do something on that object
    object.statistics
  end
end

or,

def self.create(*args)
  object = SomeClass.new(*args)
  return object if object.file_exists?
end

> ef file_exists?
> there are instance methods depending on this one
> ile.exists?("some_file_name.txt")
> nd

Umm, is the file name hard coded, or does it depend on the state of
the instance, like:

def file_exists?
  File.exists?(@file)
end

If it is hard coded, or depends on a constant, you might as well
define a class method:

class SomeClass
  CONFIG = "~/.foo.rc"

  def self.config_exists?
    File.exists?(CONFIG)
  end

  def init
    raise "Config file not found" unless SomeClass.config_exists?
    ...
  end
end

> end

> How do you deal with this kind of thing?

Depends on the context.

-- 
Anurag Priyam
http://about.me/yeban/

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