[Grace-core] Lists and filter

[Marco Servetto]

why an iterator can not be a special kind of list?

On 2 August 2014 09:28, Kim Bruce <kim at cs.pomona.edu> wrote:
> I'm a bit surprised that the method filter on a list returns an iterator.  I'm not planning on explaining iterators to my first course students (it's more appropriate for students in data structures).  That means I can't really teach my students about filter on lists.  Why not have filter on iterator return an iterator, but filter on lists return a list?
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> Kim
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