Sorted maps are maps but they have an additional constraint that the keys
must be comparable according to the map's comparator.
Clojure intentionally does not define a total sort order crossing types
(there is no such ordering that makes sense).
You are however free to define your own comparato
Thank you for the response. Isn't that a leaky abstraction? Now all clients of
rename-keys woild have to care what the key type is. At the very least both
should implement Comparable and have some kind of general response for sorting.
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Sorted maps sort their keys, but keywords and strings are not comparable:
(sorted-map "a" 1 :b 2)
ClassCastException java.lang.String cannot be cast to clojure.lang.Keyword
clojure.lang.Keyword.compareTo (Keyword.java:114)
On Thursday, April 28, 2016 at 3:54:33 PM UTC-5, JPatrick Davenport
Hello,
Please explain to me what's going on here. The first code snippet causes
the following error: "ClassCastException clojure.lang.Keyword cannot be
cast to java.lang.String java.lang.String.compareTo (String.java:111)" The
second code snippet doesn't. My understanding is that a *map* is a *
