[Wtr-general] Solution for FAQ "Using key/value pairs" not working
hi i have tried following class initialValues @@user_name = 'atilla' @@last_name = 'ozgur' end save in intial.rb file. But when i use intial.rb file in main file i get syntax error ' class/modulename must be a constant.' Also @@ means global variable inside class? ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
[Wtr-general] Solution for FAQ "Using key/value pairs" not working
>On 14/05/07, Vipul <[EMAIL PROTECTED]> wrote: > class LoginInput >@@userName = "Vipul.Goyal" > end > $ie.text_field(:id,"txtLoginID").set(LoginInput.userName) I think the OO idea is that the client should not be able to directly access a variable outside a class. class Login_Input attr_reader :user_name def initialize @user_name = "Vipul.Goyal" end end login_input = Login_Input.new p login_input.user_name Though, I would be interested in other opinions on this. aidy ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
Re: [Wtr-general] Solution for FAQ "Using key/value pairs" not working
> class initialValues Use an upper case 'I' for class name. @@ means class variable. Aidy On 11/05/07, Vipul <[EMAIL PROTECTED]> wrote: > hi > > i have tried following > > class initialValues >@@user_name = 'atilla' >@@last_name = 'ozgur' > end > save in intial.rb file. > > But when i use intial.rb file in main file i get syntax error ' > class/modulename must be a constant.' > > Also @@ means global variable inside class? > ___ > Wtr-general mailing list > Wtr-general@rubyforge.org > http://rubyforge.org/mailman/listinfo/wtr-general > ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
Re: [Wtr-general] Solution for FAQ "Using key/value pairs" not working
now i am getting following exception 'undefined method `user_Name' for LoginInput:Class (NoMethodError)' in main source file contains the code require 'Input.rb' $ie = IE.new() $ie.goto(test_site) $ie.text_field(:id,"txtLoginID").set(LoginInput.user_Name) ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
Re: [Wtr-general] Solution for FAQ "Using key/value pairs" not working
Looks like user_Name is not defined for your LoginInput class. Check your casing and make sure it exists there. Might be something like user_name, not user_Name. Otherwise we'd have to have more information on your LoginInput class. -Charley On 5/11/07, Vipul <[EMAIL PROTECTED]> wrote: now i am getting following exception 'undefined method `user_Name' for LoginInput:Class (NoMethodError)' in main source file contains the code require 'Input.rb' $ie = IE.new() $ie.goto(test_site) $ie.text_field(:id,"txtLoginID").set(LoginInput.user_Name) ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
Re: [Wtr-general] Solution for FAQ "Using key/value pairs" not working
yes i have checked the casing input.rb class LoginInput @@userName = "Vipul.Goyal" end main.rb $ie.text_field(:id,"txtLoginID").set(LoginInput.userName) exception 'undefined method `userName' for LoginInput:Class (NoMethodError)' ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
Re: [Wtr-general] Solution for FAQ "Using key/value pairs" not working
On 14/05/07, Vipul <[EMAIL PROTECTED]> wrote: > class LoginInput >@@userName = "Vipul.Goyal" > end > $ie.text_field(:id,"txtLoginID").set(LoginInput.userName) I think the OO idea is that the client should not be able to directly access a variable outside a class. class Login_Input attr_reader :user_name def initialize @user_name = "Vipul.Goyal" end end login_input = Login_Input.new p login_input.user_name Though, I would be interested in other opinions on this. aidy ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
Re: [Wtr-general] Solution for FAQ "Using key/value pairs" not working
Ah, you're using a class variable and you have no accessor methods so it's only available to . You'll need to add a class accessor or an instance method if you're creating object of type LoginInput to get at the value: class LoginInput @@user_name = "Vipul.Goyal" def LoginInput.user_name @@user_name end end puts LoginInput.user_name => "Vipul.Goyal" # Now with instance: class LoginInput @@user_name = "Vipul.Goyal" def user_name @@user_name end end l = LoginInput.new puts l.user_name => "Vipul.Goyal" -Charley On 5/14/07, aidy lewis <[EMAIL PROTECTED]> wrote: >On 14/05/07, Vipul <[EMAIL PROTECTED]> wrote: > class LoginInput >@@userName = "Vipul.Goyal" > end > $ie.text_field(:id,"txtLoginID").set(LoginInput.userName) I think the OO idea is that the client should not be able to directly access a variable outside a class. class Login_Input attr_reader :user_name def initialize @user_name = "Vipul.Goyal" end end login_input = Login_Input.new p login_input.user_name Though, I would be interested in other opinions on this. aidy ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
Re: [Wtr-general] Solution for FAQ "Using key/value pairs" not working
On 14/05/07, Charley Baker <[EMAIL PROTECTED]> wrote: > class LoginInput > @@user_name = "Vipul.Goyal" > > def LoginInput.user_name > @@user_name > end > end > > puts LoginInput.user_name > => "Vipul.Goyal" > > # Now with instance: > class LoginInput > @@user_name = "Vipul.Goyal" > > def user_name > @@user_name > end > end > > l = LoginInput.new > puts l.user_name > => "Vipul.Goyal" Hi Charley, I looked at this http://www.rubycentral.com/book/tut_classes.html and it seems to validate the structure of your code. My question then is; does Ruby not allow short-cut accessor methods (attr_reader, attr_writer, attr_accessor) for class variables? And if so, why are they created and used only for instance variables? cheers aidy ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
Re: [Wtr-general] Solution for FAQ "Using key/value pairs" not working
Hey aidy, There aren't any attribute accessors for class variables. Why? You could I suppose, but you'd want to keep them accessible only by methods in the class. I think I'm starting to understand your general question or I could be totally offbase. Say for instance to take a classic example you want to figure out how many times your class is being used. This is a pretty trivial example but I hope will illustrate the point. class MyClass @@users = 0 def initialize @@users +=1 puts "This could do something more useful" if @@users > 1 # this could exit refuse new instances, etc end def count puts @@users end end m1 = MyClass.new m1.count => 1 m2 = MyClass.new => "This could do something more useful" The class itself in this case is responsible for it's own information. What if you were able to set it from some other code through accessors? some code MyClass.users += 1 ...oops, my code died, i didn't have the chance to remove myself as a user ...worse yet, i maxed the connections to the MyClass and it's not creating new instances from other people's code. Hope that makes some sense. -Charley On 5/14/07, aidy lewis <[EMAIL PROTECTED]> wrote: On 14/05/07, Charley Baker <[EMAIL PROTECTED]> wrote: > class LoginInput > @@user_name = "Vipul.Goyal" > > def LoginInput.user_name > @@user_name > end > end > > puts LoginInput.user_name > => "Vipul.Goyal" > > # Now with instance: > class LoginInput > @@user_name = "Vipul.Goyal" > > def user_name > @@user_name > end > end > > l = LoginInput.new > puts l.user_name > => "Vipul.Goyal" Hi Charley, I looked at this http://www.rubycentral.com/book/tut_classes.html and it seems to validate the structure of your code. My question then is; does Ruby not allow short-cut accessor methods (attr_reader, attr_writer, attr_accessor) for class variables? And if so, why are they created and used only for instance variables? cheers aidy ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general ___ Wtr-general mailing list Wtr-general@rubyforge.org http://rubyforge.org/mailman/listinfo/wtr-general
