need hint for "A nil key "

[weiyongq]

"A nil key "
http://www.4clojure.com/problem/134

l look it no Elementary.

[Leif]

Hint:

(get {:a nil :b 2} :a)
=> nil ; key found, val = nil

(get {:a nil :b 2} :c)
=> nil ; key NOT found

Your code must somehow handle these two situations differently. I
suggest starting with the docs for Map-related functions:
http://clojure.org/data_structures#Data%20Structures-Maps%20%28IPersistentMap%29-Related%20functions

Good luck,
Leif

[kaoD]

And I suggest forgetting about map (what?) and just read this:

http://clojuredocs.org/clojure_core/clojure.core/get

[kaoD]

Oh sorry, misunderstood map as the function, not the data structure :)