On 22.01.2009, at 07:48, Mark Engelberg wrote: > Is there any way to determine whether something is a "struct" (versus > an ordinary hash map), and if so, determine which kind of struct it > was built from?
Not that I know. I have been searching for a while, and ended up using my own tag attached to the struct as metadata. In clojure.zip there is a similar use of metadata: methods are implemented as functions passed in the metadata. I am not entirely happy with this approach though. If everyone starts to use metadata for various purposes, such type tags may well disappear by some function replacing the metadata on an object without preserving the tags that are already there. This is all the more likely because there is nothing in the standard library to add a tag to an existing metadata map. All there is is (with-meta ...), which replaces the metadata map completely. Konrad. --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
