I thought that since into uses reduce, it would be lazy, but I was wrong.
reduce just plows through everything with a non-lazy recursion.
Why is reduce not lazy?
--Robert McIntyre
On Mon, Sep 6, 2010 at 12:37 PM, Michał Marczyk
<michal.marc...@gmail.com> wrote:
> On 6 September 2010 18:29, Robert McIntyre <r...@mit.edu> wrote:
>> walk is good but it's not lazy. If you want to preserve laziness you can do:
>
> This won't be lazy, because (into {} ...) is a strict operation.
>
> I'd suggest something like
>
> (defn mmap [f m]
> (zipmap (keys m) (map f (vals m))))
>
> f is expected to care about the value only.
>
> Sincerely,
> Michał
>
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