https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/APersistentMap.java#L24
The implementation assumes you're attempting to conj one of the following 3 things into the hash map: 1. A MapEntry object 2. A vector of the format [key value] 3. A seq of MapEntry objects (commonly created via http://docs.oracle.com/javase/6/docs/api/java/util/HashMap.html#entrySet() and the like) On Monday, June 24, 2013 11:57:46 AM UTC-7, Michael Gardner wrote: > > On Jun 24, 2013, at 11:14 , Sean Corfield <seanco...@gmail.com<javascript:>> > wrote: > > > On Mon, Jun 24, 2013 at 8:49 AM, John Gabriele > > <jmg...@gmail.com<javascript:>> > wrote: > >> Why does `into` fail when the 2-element collections are lists and not > >> vectors? : > > > > Because the implementation special cases vectors :) > > > > It's the one place where a two element vector is treated like a > > Map$Entry so that you are not forced to somehow create Map$Entry > > instances for the key/value pairs. > > Huh. I had assumed this would work with any 2-element collection, like > destructuring. Why not? Performance reasons? -- -- 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/groups/opt_out.
