I already have code which uses fn? everywhere. So i needed to inherit Fn interface. Adding metadata to the function (basically, an id) was a necessary afterthought. Basically, im using an emacs like hook interface for the gui end of my application, so its hightly configurable - but i need to know which namespace the function can from (or id, if supplied), so that i can overwrite the hook when adding a hook with similar ns/id.
On Feb 13, 9:08 pm, Ken Wesson <kwess...@gmail.com> wrote: > On Sun, Feb 13, 2011 at 7:00 PM, Seth <wbu...@gmail.com> wrote: > > Cool, thats what I thought. Sometimes, i wish i could inherit from a > > class, but then i just use proxy to do it instead :) For example, i > > made a function which acted like a fn? , but had some metadata. At > > first i was going to use records, but couldnt because i needed to > > inherit from Afn, but proxies worked beautifully! > > If you controlled the testing code, could you have used ifn? instead > of fn?, or would ifn? returning true on things like vectors, maps, and > sets have caused a problem? > > The ifn? function tests only for the interface IFn, which deftype can > be used to implement (and defrecord implements by default as map > lookup). -- 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
