vary-meta
- (vary-meta obj f & args)
Returns an object of the same type and value as obj, with (apply f (meta obj) args) as its metadata.
© Rich Hickey. 保留所有权利。 Eclipse Public License 1.0
2 Examples
;; continuing from the previous with-meta example user=> (def wm (with-meta [1 2 3] {:my "meta"})) #'user/wm user=> wm [1 2 3] user=> (meta wm) {:my "meta"} user=> (def new-wm (vary-meta wm assoc :your "new meta")) #'user/new-wm user=> new-wm [1 2 3] user=> (meta new-wm) {:my "meta", :your "new meta"}