From: 7stud -- <bbxx789_05ss@...>
Date: 2008-02-20T08:27:49+09:00
Subject: Re: Is there any object-oriented File class in ruby ?

tom_33 wrote:
> I am very new to Ruby and my question is about trying to understand
> why Ruby is often described as a "pure object-oriented language", when
> the core library seems to be quite procedural.
> 
> For example, the class File seems to have a big bunch of procedural
> functions (or static methods, or whatever you want to call them) that
> needs the filename to be provided as a parameter.
> 
> The File class in java is a much better OO class for managing files:
> http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html
> than the following ruby class:
> http://ruby-doc.org/core/classes/File.html
> 
> For example, the ruby method File.basename is documented as only
> supporting forward slashes, regardless of the local file system.
> File.basename("/home/gumby/work/ruby.rb")          #=> "ruby.rb"
> Essentially, this seems to be not much more than a string parsing
> function with no OO abstraction that represents a file object.
> Compare this with doing the same thing with java:
> File f = new File("/home/gumby/work/ruby.rb"); // or new File("C:\\home
> \\gumby\\work\\ruby.rb");
> f.getName() #=> "ruby.rb"
> 
> Now my question is what have I been missing here ?
> I mean, is there any other much better File class somewhere in the
> Ruby core that is more pure OO, or otherwise why is a language with a
> CORE procedural "class" library described as being a pure oo
> language ?
> 
> / Tom

Look at this code:

class A
  def hi
    puts 'hi'
  end
end

class B
  def B.hello
    puts 'hello'
  end
end

a = A.new
a.hi

B.hello

--output:--
hi
hello


Personally, I do not like the formal nature of class B.  I prefer the 
friendlier, more personable class A.  As a result, I do not consider 
class B to be object oriented.

Is that a logical conclusion?


Let's try this:

def hi
  puts 'hi'
end

def hello
  puts 'hi mate'
end

hi
hello

--output:--
hi
hi mate

I consider that output superior, therefore I believe that code is more 
object oriented.  Is that a logical conclusion?


-- 
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