Re: [iterate-devel] Iteration on multiple lists sequentially

Note that unless these lists are very big, the cost of doing the append isn't that high. If this code isn't executed a whole lot, it might not be worth trying to avoid the append. (Modern GC's are a lot better than old ones.)

-- Dan

William Halliburton wrote:

Hello all,

Does anyone have a generator that allows for iteration on multiple lists sequentially without creating a single list.

I'm doing this alot:

(iter (for el in (append list1 list2 list3)))

when the APPEND is really not necessary with a sufficiently smart generator like:

(iter (for el in list then list2 then list3)))

?

Thank you, Will

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