On 22.03.2009, at 21:10, Jon Nadal wrote:

> I often need to map a function over the values of a map while
> preserving keys--something like:
...
> Is there a more concise way to do this in Clojure?  If not, is this
> something that might be worth putting in the contrib?
Look at clojure.contrib.generic.functor/fmap. It does what you need  
for maps, for all the other Clojure collections (where it works like  
map except that its return value is a collection of the same type as  
the input value), and you can implement it for any type you define  
yourself, e.g. a tree structure.

Konrad.


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