fluent interface program in Ruby

Posted by intern on Stack Overflow See other posts from Stack Overflow or by intern
Published on 2010-05-28T06:06:45Z Indexed on 2010/05/28 6:11 UTC
Read the original article Hit count: 228

Filed under:

fluent-api

we have made the following code and trying to run it.

class Numeric

  def gram 
  self
  end
  alias_method :grams, :gram
def of(name)
  ingredient = Ingredient.new(name)
  ingredient.quantity=self
  return ingredient
end
end


class Ingredient 
  def initialize(n)
    @@name= n
    end

  def quantity=(o)
  @@quantity = o
   return @@quantity
 end

 def name
   return @@name
 end

 def quantity
   return @@quantity
 end
end

e= 42.grams.of("Test")
a= Ingredient.new("Testjio")
puts e.quantity
a.quantity=90
puts a.quantity
puts e.quantity

the problem which we are facing in it is that the output of
puts a.quantity
puts e.quantity
is same even when the objects are different. what we observed is that second object i.e 'a' is replacing the value of the first object i.e. 'e'. the output is coming out to be
42
90
90
but the output required is
42
90
42

can anyone suggest why is it happening? it is not replacing the object as object id's are different..only the values of the objects are replaced.

fluent interface program in Ruby

Posted by intern on Stack Overflow See other posts from Stack Overflow or by intern
Published on 2010-05-28T05:09:48Z Indexed on 2010/05/28 5:11 UTC
Read the original article Hit count: 228

Filed under:

ruby

|

program

|

fluent-api

we have made the following code and trying to run it.

class Numeric def gram self end alias_method :grams, :gram

def of(name) ingredient = Ingredient.new(name) ingredient.quantity=self return ingredient end end

class Ingredient def initialize(n) @@name= n end

  def quantity=(o)
  @@quantity = o
   return @@quantity
 end

 def name
   return @@name
 end

 def quantity
   return @@quantity
 end

end

e= 42.grams.of("Test") a= Ingredient.new("Testjio") puts e.quantity a.quantity=90 puts a.quantity puts e.quantity

the problem which we are facing in it is that the output of puts a.quantity puts e.quantity is same even when the objects are different. what we observed is that second object i.e 'a' is replacing the value of the first object i.e. 'e'. the output is coming out to be 42 90 90 but the output required is 42 90 42

can anyone suggest why is it happening? it is not replacing the object as object id's are different..only the values of the objects are replaced.

Developer IT