From: Roger Alsing <roger.alsing@...>
Date: 2008-05-17T14:48:36+09:00
Subject: Re: Not quite getting it.

> class Test
>     attr_accessor :order
> 
>     def order=(order)
>       if order.kind_of?(Giraffe)
>         raise Exception.new("We package nearly everything, but
> Giraffes????")
>       end
>     end
> end
> 

So is it common practise to do it like this?
Eg. does active records have this kind of stuff in the generated code 
that comes out of "has_many" etc?

Anyway, I think I do buy this.
Preventing the wrong types form beeing used is pretty much the same as 
preventing the use of null in C#.
It simply become an extra step in parameter validation.

And thanks everyone for the replies :-)


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