From: Wesley Silva <wesleyse@...>
Date: 2008-06-01T06:35:11+09:00
Subject: Class Module

Hi, I'm still learning ruby and i'm trying, but I just can't understand
this result...

class Module
  @@docs = {}
  # Invoked during class definitions
  def doc(str)
    @@docs[self.name] = self.name + ":\n" + str.gsub(/^\s+/, '')
  end
  # invoked to get documentation
  def Module::doc(aClass)
    # If we're passed a class or module, convert to string
    # ('<=' for classes checks for same class or subtype)
    aClass = aClass.name if aClass.class <= Module
    @@docs[aClass] || "No documentation for #{aClass}"
  end
end
class Example
  doc("This is a sample documentation string")

  # .. rest of class
end

puts Module::doc(Example)


Produces:

Example:
This is a sample documentation string


But

class Module
  @@docs = {}
  # Invoked during class definitions
  def doc(str)
    @@docs[self.name] = self.name + ":\n" + str.gsub(/^\s+/, '')
  end
  # invoked to get documentation
  def Module::doc(aClass)
    # If we're passed a class or module, convert to string
    # ('<=' for classes checks for same class or subtype)
    aClass = aClass.name if aClass.class <= Module
    @@docs[aClass] || "No documentation for #{aClass}"
  end
end
class Example<Module
  doc("This is a sample documentation string")

  # .. rest of class
end

puts Module::doc(Example)

Produces:

No documentation for Example


Can anybody tell me why?
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