A class and set of methods to emulate some of the functionality of JavaScript Set objects.

Class: Set

Constructor
INPUT:
A collection of numbers and/or text.

OUTPUT:
A class object containing distinct values from the collection.

Properties & Functions

Syntax	Result
.size	The total amount of values in the set.
.add(num or text)	Add a value to the set.C
.has(num or text)	Check if the set contains a value.
.delete(num or text)	Remove a value from the set.C
.clear()	Remove all values from the set.C
.collection()	Create a collection of values from the set.

^C = chainable

Example

$mySet:=cs.Set.new(["foo"; 12; "12"; 1.56; "foo"])  // Set {"foo","12",1.56,12}
$size:=$mySet.size  // 4
$mySet.add("bar")  // Set {"bar","foo","12",1.56,12}
$mySet.has("bar")  // True
$mySet.has("baz")  // False
// chaining
$mySet.delete("foo").add(4).delete(1.56)  // Set {"bar","12",4,12}
$coll:=$mySet.collection()  // ["bar","12",4,12]
$mySet.clear()  // empty Set {}

Method: getDifference

INPUT:
(1) Set A, (2) Set B

OUTPUT:
Set C, which is the difference of Set A versus Set B.

NOTE:
Order of inputs matters, i.e. getDifference(A;B) =/= getDifference(B;A)

Example

$s1:=cs.Set.new([1; 2; 3; 4])
$s2:=cs.Set.new([3; 4; 5; 6])
$d1:=getDifference($s1; $s2)  // Set {1,2}
$d2:=getDifference($s2; $s1)  // Set {5,6}

Method: getIntersection

INPUT:
(1) Set A, (2) Set B

OUTPUT:
Set C, which is the intersection of Set A and Set B.

Example

$s1:=cs.Set.new([1; 2; 3; 4])
$s2:=cs.Set.new([3; 4; 5; 6])
$s3:=cs.Set.new([7; 8])
$n1:=getIntersection($s1; $s2)  // Set {3,4}
$n2:=getIntersection($s1; $s3)  // empty Set {}

Method: getSymmetricDifference

INPUT:
(1) Set A, (2) Set B

OUTPUT:
Set C, which is the symmetric difference of Set A and Set B.

NOTE:
Order of inputs does not matter, i.e. getDifference(A;B) = getDifference(B;A)

Example

$s1:=cs.Set.new([1; 2; 3; 4])
$s2:=cs.Set.new([3; 4; 5; 6])
$d:=getSymmetricDifference($s1; $s2)  // Set {1,2,5,6}

Method: getUnion

INPUT:
(1) Set A, (2) Set B

OUTPUT:
Set C, which is the union of Set A and Set B.

Example

$s1:=cs.Set.new(["a"; "b"])
$s2:=cs.Set.new(["c"; "d"])
$u:=getUnion($s1; $s2)  // Set {a,b,c,d}

Method: isSuperset

INPUT:
(1) Set A, (2) Set B

OUTPUT:
True, if Set A is a superset of Set B. False, otherwise.

Example

$s1:=cs.Set.new([1; 2; 3])
$s2:=cs.Set.new([4; 5; 6])
$s3:=cs.Set.new([1; 2; 3; 4; 5; 6])
$b1:=isSuperset($s1; $s2)  // False
$b2:=isSuperset($s1; $s3)  // False
$b3:=isSuperset($s3; $s1)  // True