Looking at the persistent types in clojure.lang.* (PersistentVector.java et al.) I see several occurrences of the idiom EMPTY.withMeta(meta()) where EMPTY is a constant (static final) denoting an empty collection of the appropriate type.
What I can not understand, given that these types are all persistent, is why the EMPTY constant is, in effect, copied at most places where it is used. Why not use the same EMPTY instance instead, i.e. replace EMPTY.withMeta(meta()) with just EMPTY. Unless I miss something this could not hurt and would save some time and space. Regards, -- 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
