Refactoring and additions related to hint experiments

I'm taking this out.  I had been thinking of getting rid of similar code
(DRY) by making each experiment a set of parameters.


On Tue, Jul 22, 2014 at 2:35 PM, Laurel <notifications@github.com> wrote:

> In app/models/experiment_activity.rb:
>
> > @@ -41,30 +41,125 @@ def self.get_feedback_design(activity_id)
> >      end
> >    end
> >
> > +  ## Parameterized experiments.
> > +  @@experiments = {
> > +      'stanford experiment' => { running: false,
> > +                                 parameter_name: 'stanford_experiment',
> > +                                 fun: ??},
>
> what's this? ?? syntax is not that common, it may be clearer to just use
> '?'
>
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