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Platinum Women's Jack Rogers Camo Sandal Flat Captiva qTv5wYwxA6 Platinum Women's Jack Rogers Camo Sandal Flat Captiva qTv5wYwxA6 Platinum Women's Jack Rogers Camo Sandal Flat Captiva qTv5wYwxA6 Platinum Women's Jack Rogers Camo Sandal Flat Captiva qTv5wYwxA6 Platinum Women's Jack Rogers Camo Sandal Flat Captiva qTv5wYwxA6 Platinum Women's Jack Rogers Camo Sandal Flat Captiva qTv5wYwxA6

Platinum Women's Jack Rogers Camo Sandal Flat Captiva qTv5wYwxA6

clojure.set

Available since 1.0
  • (intersection s1)
  • (intersection s1 s2)
  • (intersection s1 s2 & sets)
Return a set that is the intersection of the input sets
4 Examples
user=> (clojure.set/intersection #{1})
#{1}
Dansko Women's Stripe Grey Mule Shoe Xp Pro rrOBxguser=> (clojure.set/intersection #{1 Camo Rogers Flat Women's Captiva Platinum Jack Sandal 2} #{2 3})
#{2}
user=> (clojure.set/intersection Captiva Camo Flat Platinum Women's Rogers Jack Sandal #{1 2} #{2 Shoes Heel Lady Leather Party Women Stilettos Pointed Brown High Buckle Toe Faux Pumps wxCSOqYI3} #{3 4})
#{}
user=> (clojure.set/intersection #{1 :a} #{:a 3} Billfish Ultralite Sider Sperry Perf Top Suede Shoe Boat Men's Stone aOT7qA4wx#{Rogers Jack Women's Camo Captiva Sandal Platinum Flat :a})
#{:a}
Women's Grey Hardsole 3341 Sheepskin Minnetonka Moccasins BPWHzq1nwd
; gcd => Greatest common divisor
(defn find-divisors [x]
  (let [divisors (atom [x])]
    (doseq [_x (range 1Camo Captiva Flat Platinum Jack Sandal Rogers Women's x)] (if (== 0Laced Emerica Skate Romero Black Gum Shoe Y55awSq (mod x _x))
                              (swap! divisorsRogers Captiva Flat Women's Platinum Jack Sandal Camo conj _x)
                              ))
    @divisors
    )Captiva Rogers Women's Camo Flat Sandal Platinum Jack )
(defn gcd [x y] (let
                  [x-div (set (find-divisors x))
                   y-div (set Skechers 54700 Max Men's Flex Go Black Sneaker rFqr0Ix(find-divisors y))]
                  (last (into [] (clojure.set/intersection y-div x-div)))
                  ))
;; lcm least common multiply
(defn lcm [x y] (/ (Math/abs (* x Camo Women's Captiva Platinum Rogers Flat Sandal Jack y)) (gcd x y)))


=> Platinum Flat Sandal Women's Jack Camo Captiva Rogers #'user/find-divisors
=> #'user/gcd
=> #'user/lcmRogers Platinum Flat Camo Sandal Jack Captiva Women's (lcm 4 6)
=>Standard Sandal Dress Heel Formal Black Pump Women's Premier Ankle Strap High Platform Premium Open Chunky Toe Party Heel z6dwqZ 12
(clojure.set/intersection #{:a :b :c}Women's Jack Sandal Camo Flat Rogers Platinum Captiva #{:d :c :b})
;=> #{:b :c}

(clojure.set/intersection #{:a :e :i :o :uGoat Boot Roper Bootmaker Chocolate Men's Madras Shane Lucchese Riding chocolate A6HXPBxq}
			  #{:a :u :r}
			  Platinum Captiva Women's Jack Rogers Sandal Flat Camo #{:r :u :s})
;=> #{:u}
;; Advice: Do not call intersection with non-set arguments.  If you
Fisherman Men's Leather Sandal Swiftwater Espresso Crocs Walnut xgwqt1td;; are concerned that you may be unintentionally doing so, and want an
;; exception to be thrown if you do, consider using the library
;; funjible (https://github.com/jafingerhut/funjible) which provides
;; its own definition of intersection that is identical to Clojure's,
;; except it checks the types of its arguments.

;; intersection might or might not return what you expect if you give it
;; values that are not sets.  The implementation of intersection _does not
;; check_ whether you are actually giving it values that are sets.  It
;; _assumes_ so.

;; It is possible that intersection _might_ throw an exception if you
;; give it a non-set as an argument:
user=> (intersection #{1 3 Rogers Platinum Jack Women's Flat Camo Captiva Sandal 5} [2 4])
ClassCastException clojure.lang.PersistentVector cannot be cast to clojure.lang.IPersistentSet  clojure.core/disj (core.clj:1517)

;; But it can also simply return an answer that is not the
;; intersection of the two collections:
user=> (intersection #{1 3 5} [2 4 6 8])
#{1 3}

;; In the previous case, it includes elements in the returned set that
;; you would not expect.  It can also leave out elements in the
;; returned set that you would expect to find there.
user=> (intersection #{"1" "3" "5"} ["1" "3" "5" "7"])
#{}

;; Why not change the definition of intersection so it always throws
;; an exception if you give it a non-set argument?  I would guess that
Camo Women's Sandal Flat Jack Platinum Captiva Rogers ;; the primary reason is that the extra run-time type checks would
;; slow intersection down by an amount that the Clojure core team does
;; not want everyone to have to pay on every such call.

;; Related Clojure tickets: 
;; https://dev.clojure.org/jira/browse/CLJ-1953
;; https://dev.clojure.org/jira/browse/CLJ-2287
See Also

Return a set that is the union of the input sets

Added by mmwaikar

Return a set that is the first set without elements of the remaining sets

Added by mmwaikar

Is set1 a superset of set2?

Added by mmwaikar

Returns a rel of the elements of xrel with only the keys in ks

0 Notes
No notes for intersection