"Lisp.fif" include
16 constant key-bits
16 constant val-bits
{ val-bits u, } : val,
{ val-bits u@ } : val@
{ swap unpair <b swap val, b> <s swap rot key-bits udict! not abort"cannot add key-value" } : +dictpair
{ dictnew { over null? not } { swap uncons swap rot +dictpair } while nip } : mkdict
{ dup null? { ."(null) " drop } { val@ . } cond } : .val
{ key-bits { swap . ."-> " .val ."; " true } dictforeach drop cr } : show-dict
{ key-bits { rot . ."-> " swap .val .val ."; " true } dictdiff drop cr } : show-dict-diff
{ key-bits { val@ swap val@ + val, true } dictmerge } : dict-sum
{ null swap key-bits { val@ pair swap cons true } dictforeach drop  } : dict>list-rev
{ dict>list-rev list-reverse } : dict>list
( _( 13 169 ) _( 17 289 ) _( 10 100 ) ) mkdict =: Dict
_( 4 16 ) _( 9 81 ) Dict +dictpair +dictpair =: Dict1
_( 4 20 ) _( 101 10201 ) Dict +dictpair +dictpair =: Dict2
."Dict1 = " Dict1 show-dict 
Dict1 dict>list .l cr
Dict1 <s csr. cr
."Dict2 = " Dict2 show-dict 
Dict2 dict>list .l cr
Dict2 <s csr. cr
Dict1 Dict2 show-dict-diff
Dict2 Dict1 show-dict-diff