Uninitialized class variable

[Pixero]

I'm trying to make a script remember the values the user puts in during a SketchUp session so that he wont have to re enter them every time the script is run.

When for example using:

module Mymodule
  class Myclass

  def initialize
    #Setting default values
    @myvariable = 25.mm unless @myvariable 

    #And so on......

the script works but wont remember the settings when run again.

When using @@myvariable = 25.mm unless @@myvariable
I get a "Uninitialized class variable" error message.

What am I doing wrong?

[Pixero]

Should it be @@myvariable = nil and then @myvariable with just one @ or was that a typo?

[sdmitch]

@pixero said:

Should it be @@myvariable = nil and then @myvariable with just one @ or was that a typo?

I just copied your code and added the @@myvariable=nil to it. The typo, @myvariable, was in your original code.

It should be @@myvariable everwhere.

[sdmitch]

@pixero said:

I'm trying to make a script remember the values the user puts in during a SketchUp session so that he wont have to re enter them every time the script is run.

When for example using:

module Mymodule
>   class Myclass
> 
>   def initialize
>     #Setting default values
>     @myvariable = 25.mm unless @myvariable 
> 
>     #And so on......

the script works but wont remember the settings when run again.

When using @@myvariable = 25.mm unless @@myvariable
I get a "Uninitialized class variable" error message.

What am I doing wrong?

You just need to make a dummy assignment to it just after class declaration.

module Mymodule
  class Myclass
  @@myvariable=nil
  def initialize
    #Setting default values
    @@myvariable = 25.mm unless @myvariable 

    #And so on......

[Pixero]

Thanks, that worked.