I believe the reason it's not recommended is because it returns a lazy chunked sequence. This means that it's not guaranteed to eagerly perform your side-effects, unless you wrap it in `doall`.
On Wed, Sep 2, 2015 at 8:48 AM, James Elliott <brunch...@gmail.com> wrote: > I notice that the documentation for filter and filterv are emphatic that > the predicate you are using be free of side effects. Why is that so? For > example, I would like to use filterv to collect a list of lighting > effects which respond false to a protocol method which asks whether they > have finished. In the implementation of that method, the effects are free > to update their internal state based on the current show state and time, > when deciding whether or not they are finished, and so I can’t guarantee > there will be no side effects while filtering the effects. Does that mean I > can’t use filterv? If not, why not? Looking at the source, I see no > obvious problems. > > -- > 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. > -- 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.
