From: cibercitizen1 <CiberCitizen1@...>
Date: 2008-11-26T07:00:26+09:00
Subject: Re: my attr_accessor


My solution above for having

fo = Foo.new() {
  color "red"
  height 50
}

by defining

class Foo
  extend MyAccessor

  my_attr(:title, "default title")
  my_attr(:height, 100)
  my_attr(:color, 'black')
  def initialize( &bloc )
    instance_eval( &bloc )
  end # def
end # class

is buggy because the ' ' in
@#{nou} = s || @#{nou} || '#{defval}'
ends with variables being always strings.

This one works better

module MyAccessor
  def my_attr (nou, defval=nil)
    if defval == nil
      code ="def #{nou} (s=nil)
        @#{nou} = s || @#{nou}
      end"
    elsif defval.class==String
      code ="def #{nou} (s=nil)
        @#{nou} = s || @#{nou} || '#{defval}'
      end"
    else
      code ="def #{nou} (s=nil)
        @#{nou} = s || @#{nou} || #{defval}
      end"
    end
    #puts "class_eval", code
    class_eval code
  end # def my_attr
end # module