why can't I use the interface as function argument instead of the
concrete class (record)?
example: (defprotocol IPiece
blah blah blah)
(defrecord ChessPiece
IPiece
blah blah blah)
(defrecord CheckersPiece
IPiece
blah blah blah)
(defn move [^IPiece p] ;will complain that it can't resolve type IPiece
blah blah blah)
do I need to do (derive ::ChessPiece ::IPiece) ???
Thanks in advance...
Jim
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