Hello!
Function 'set' looses some of its data. It seems that there is a
problem with comparison between lists and vectors:
user=> (count [nil false true 0 42 0.0 3.14 2/3 0M 1M \c "" "abc"
'sym :kw () '(1 2) [] [1 2] {} {:a 1 :b 2} #{} #{1 2}])
23
user=> (set [nil false true 0 42 0.0 3.14 2/3 0M 1M \c "" "abc"
'sym :kw () '(1 2) [] [1 2] {} {:a 1 :b 2} #{} #{1 2}])
#{nil 0 0.0 0M "" {} #{} 2/3 () "abc" {:a 1, :b 2} (1 2) #{1 2} \c
3.14 42 sym true :kw false 1M}
user=> (count (set [nil false true 0 42 0.0 3.14 2/3 0M 1M \c "" "abc"
'sym :kw () '(1 2) [] [1 2] {} {:a 1 :b 2} #{} #{1 2}]))
21
; missing are [] and [1 2]
user=> (set [()])
#{()}
user=> (set [() []])
#{()}
user=> (set [() [] {}])
#{{} ()}
user=> (set [[] [1 2]])
#{[] [1 2]}
user=> (set [[] [1 2] 1])
#{[] 1 [1 2]}
user=> (set [[] [1 2] ()])
#{[] [1 2]}
user=> (set [() [] [1 2]])
#{() [1 2]}
What data types is sorted-set supposed to work on? When used with
different data types, it errors out:
http://clojure.org/data_structures
user=> (doc sorted-set)
-------------------------
clojure.core/sorted-set
([& keys])
Returns a new sorted set with supplied keys.
user=> (sorted-set 4 2)
#{2 4}
user=> (sorted-set () [])
java.lang.ClassCastException: clojure.lang.PersistentList$EmptyList
cannot be cast to clojure.lang.IPersistentVector (NO_SOURCE_FILE:0)
user=> (sorted-set nil false true 0 42 0.0 3.14 2/3 0M 1M \c "" "abc"
'sym :kw () '(1 2) [] [1 2] {} {:a 1 :b 2} #{} #{1 2})
java.lang.ClassCastException: java.lang.Boolean cannot be cast to
java.lang.Number (NO_SOURCE_FILE:0)
user=> (sorted-set '(1 2) 1)
java.lang.ClassCastException: clojure.lang.PersistentList cannot be
cast to java.lang.Number (NO_SOURCE_FILE:0)
user=> (sorted-set '(1 2) "abc")
java.lang.ClassCastException: clojure.lang.PersistentList cannot be
cast to java.lang.String (NO_SOURCE_FILE:0)
user=> (sorted-set "abc" #{1 2})
java.lang.ClassCastException: clojure.lang.PersistentHashSet cannot be
cast to java.lang.Comparable
(NO_SOURCE_FILE:0)
user=> (sorted-set 42 #{1 2})
java.lang.ClassCastException: clojure.lang.PersistentHashSet cannot be
cast to java.lang.Comparable
(NO_SOURCE_FILE:0)
It works when types are the same:
user=> (sorted-set "z" "b")
#{"b" "z"}
user=> (sorted-set 42 2.0)
#{2.0 42}
user=> (sorted-set [2 3] [1])
#{[1] [2 3]}
Frantisek
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