this issue on core.typed http://dev.clojure.org/jira/browse/CTYP-96
in particular the comment: "This is starting to make me rethink what a clojure.core docstring means exactly by a "lazy sequence" cheers, Gianluca On Wednesday, April 16, 2014 6:45:01 PM UTC+2, Mars0i wrote: > > The docstring for iterate says that it returns a lazy sequence, but it > returns a Cons wrapped around a LazySeq. This means, for example, that > realized? can't be applied to what iterate returns. Is this a problem > with the iterate docstring? Or should realized? be applicable to > Conses? I assume that there's a good reason that iterate returns a Cons > instead of a LazySeq. > > Clojure 1.6.0 > user=> (doc iterate) > ------------------------- > clojure.core/iterate > ([f x]) > Returns a lazy sequence of x, (f x), (f (f x)) etc. f must be free of > side-effects > nil > > user=> (def xs (iterate inc 0)) > #'user/xs > > user=> (class xs) > clojure.lang.Cons > > user=> (class (rest xs)) > clojure.lang.LazySeq > > user=> (realized? (rest xs)) > false > > user=> (realized? xs) > ClassCastException clojure.lang.Cons cannot be cast to > clojure.lang.IPending clojure.core/realized? (core.clj:6883) > > user=> (take 5 xs) > (0 1 2 3 4) > > user=> (realized? (rest xs)) > true > > user=> (realized? xs) > ClassCastException clojure.lang.Cons cannot be cast to > clojure.lang.IPending clojure.core/realized? (core.clj:6883) > > user=> (doc realized?) > ------------------------- > clojure.core/realized? > ([x]) > Returns true if a value has been produced for a promise, delay, future > or lazy sequence. > nil > -- 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.
