Hi,
I have several models in my app which contain several numerical attribute.
Ex.: stock model; attributes: bid, ask, value,..
todays_values_of_Google = [ [#Stock: id=1, bid = 1.5, ask = 1.5, value =
1.5, time=..., ...], [#Stock: id=2, bid = 1.45, ask = 1.5, value =
1.45,..],... ]
Now I would like to have some statistics. I saw the possibility of open the
array class and add some functions like:
Class Array
def mean; blabla ; end;
...
end
But I would like to have the option of telling the *attribute* on which to
calculate the mean.
So what would be the best practice for this as I need this on several model?
1.) A module? How?
Maybe this
def mean(*array,attr*); #calculate over all items of *array*s attribute
*attr*.... ; end
2.) Modify Classes? Where to do it so all model can access the "new" methods
of Array (for example)
3.) Somethink else?
Thanks for any help
Chris
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