How can I call foo in Bar.foo?

ruby-talk
1

it's like this
.........................
module Bar
  def foo
    puts 'hello'
  end
  def bye
    puts 'bye'
  end
end

def Bar.foo
  #Do something
  #I want to call foo now
  #And call bye
  #...
end
.........................

is there anything i can to to solve the problem

···

--
Posted via http://www.ruby-forum.com/.

2

I won't advocate this as a solution, but it does seem to meet your
criterion.

module Bar
def foo
   puts 'hello'
end
def bye
   puts 'bye'
end
end

# Extends Bar's singleton class with its own instance methods
p (class << Bar ; self ; end).ancestors
Bar.extend Bar
p (class << Bar ; self ; end).ancestors

# since Bar is now an ancestor of itself, we can call super from within
class methods
def Bar.foo
  puts "doing something"
  super
  bye
end

Bar.foo

···

On Sat, Jun 12, 2010 at 12:33 AM, Ntys Dd <ntysdd@gmail.com> wrote:

it's like this
.........................
module Bar
def foo
   puts 'hello'
end
def bye
   puts 'bye'
end
end

def Bar.foo
#Do something
#I want to call foo now
#And call bye
#...
end
.........................

is there anything i can to to solve the problem
--
Posted via http://www.ruby-forum.com/\.

3

It does not really make sense since the first #foo you define is an instance method while the latter is a class method. When you have a class you do not have an instance available so on what instance would you intend to invoke #foo on? It can only work the other way round: you have the instance method invoking the class (module) method.

module Bar
   def self.foo
     puts "module method"
   end

   def foo
     puts "instance method"
     Bar.foo
   end
end

irb(main):011:0> o = Object.new.extend Bar
=> #<Object:0x910a418>
irb(main):012:0> o.foo
instance method
module method
=> nil

Of course you can also do

module Bar
   def uber_foo
     foo
     bye
   end
end

Kind regards

  robert

···

On 06/12/2010 07:33 AM, Ntys Dd wrote:

it's like this
........................
module Bar
  def foo
    puts 'hello'
  end
  def bye
    puts 'bye'
  end
end

def Bar.foo
  #Do something
  #I want to call foo now
  #And call bye
  #...
end
........................

is there anything i can to to solve the problem

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/