> > On Monday, April 10, 2017 at 12:39:37 PM UTC-4, Alex Miller wrote:
Oh, you still need r/folder, sorry! Something like: > > (r/fold + (r/folder v (map inc))) > Ah, okay, glad to know I wasn't going crazy :) Thanks! On Monday, April 10, 2017 at 12:39:37 PM UTC-4, Alex Miller wrote: > > > > On Sunday, April 9, 2017 at 9:44:00 PM UTC-5, Alexander Gunnarson wrote: >> >> >> As an aside about the stateful `take` transducer, Tesser uses the >> equivalent of one but skirts the issue by not guaranteeing that the first n >> items of the collection will be returned, but rather, n items of the >> collection in no particular order and starting at no particular index. This >> is achievable without Tesser by simply replacing the `volatile` in the >> `core/take` transducer with an `atom` and using it with `fold`. But yes, >> `take`'s contract is broken with this and so still follows the rule of >> thumb you established that `fold` can't use stateful transducers (at least, >> not without weird things like reordering of the indices in `map-indexed` >> and so on). >> > > Right, we intentionally chose to require transducer takes to occur in > order to match the sequence take. Tesser's approach is perfectly fine too > (as long as you understand the difference). > > >> That's interesting that `fold` can use transducers directly! I haven't >> tried that yet — I've just been wrapping them in an `r/folder`. >> > > Oh, you still need r/folder, sorry! Something like: > > (r/fold + (r/folder v (map inc))) > > > > > > > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
