Yukihiro Matsumoto wrote:
> |- can someone give an example where it would be useful to redefine !,
> |  != or !~?
> 
> For example,
> 
>   big_sized_narray.delete_if{|x| x != 0}
> 
> to invoke x.!= which creates C coded filter, to avoid evaluating a
> block for each elements in the NArray.
sorry, I don't get this example.

!![murphy]