JavaScript Set() as it should be.
ECMAScript 6 sets have no methods for computing the union (∪), intersection (∩) or difference (⊖). Zet is an extension of ES6 Set and comes with all its functionality included. The API is similar to how sets work in Python.
Additions to the default ECMAScript 6 set
- ∪ union
- ∩ intersection
- - difference/subtract
- ⊖ symmetric difference
- ⊆ subset
- ⊇ superset
- map
- filter
- reduce
$ npm install --save zet
const Zet = require('zet');
let a = new Zet([1, 2, 3]);
let b = new Zet([3, 4, 5]);
let c = new Zet([2, 3, 4]);
Zet.union(a, b);
//=> [Zet] {1, 2, 3, 4, 5}
a.union(b, c);
//=> [Zet] {1, 2, 3, 4, 5}
a.intersection(b);
//=> [Zet] {3}
a.symmetricDifference(c);
//=> [Zet] {1, 4}
a.subset(b);
//=> false
a.filter(i => i % 2);
//=> [Zet] {1, 3}Returns:Zet
Returns the Zet instance.
Zet extends Set() and inherit all its functionality, like has(), size() etc.
Returns:zet
Static variadic function that return a new set with elements from all other sets.
Type: Zet|Set
Two or more sets of type Zet or Set.
Returns:zet
Static variadic function that return a new set with elements common to this and all other sets.
Type: Zet|Set
Two or more sets of type Zet or Set.
Returns:zet
Returns the difference between two or more sets. The order of the sets matters. Sets are differentiated against the first argument/set.
Type: Zet|Set
Two or more sets of type Zet or Set.
Returns:zet
Static funciont that return a new set with elements in either setA or setB but not both.
Type: Zet|Set
Set A of type Zet or Set.
Type: Zet|Set
Set B of type Zet or Set.
Returns: Boolean
Test whether every element in setB is in setA.
Type: Zet|Set
Set of type Zet or Set.
Type: Zet|Set
Set of type Zet or Set.
Returns: Boolean
Test whether every element in setA is in setB.
Type: Zet|Set
Set of type Zet or Set.
Type: Zet|Set
Set of type Zet or Set.
Returns: Zet|Set
Creates a set with the results of calling the provided function on every element.
Type: Zet|Set
Set of type Zet or Set.
Type: Function
Function that produces an element of the new set.
Returns: Zet|Set
Creates a set with all elements that pass the test implemented by the provided function.
Type: Zet|Set
It is the set going to be examined.
Type: Function
It is a predicate, to test each element of the set.
Returns: Number
Reduces the set to a single value, by executing the provided function for each element in the set (from left-to-right).
Type: Zet|Set
Set of type Zet or Set.
Type: Function
Function to be executed for each element in the set.
Type: Number
Optional. A value to be passed to the function as the initial value.
Returns:zet
Variadic method that return a new set with elements from this and all other sets.
Type: Zet|Set
One or more sets of type Zet or Set.
Returns:zet
Variadic method that return a new set with elements common to this and all other sets.
Type: Zet|Set
One or more sets of type Zet or Set.
Returns:zet
Variadic method tht return a new set with elements in this that are not in the other sets.
Type: Zet|Set
One or more sets of type Zet or Set.
Returns:zet
Method that return a new set with elements in either this or other but not both. This is also known as xor.
Type: Zet|Set
Set of type Zet or Set.
Returns: Boolean
Test whether every element in the set is in other.
Type: Zet|Set
Set of type Zet or Set.
Returns: Boolean
Test whether every element in other is in the set.
Type: Zet|Set
Set of type Zet or Set.
Returns: Zet|Set
Creates a set with the results of calling the provided function on every element.
Type: Function
Function that produces an element of the new set.
Returns: Zet|Set
Creates a set with all elements that pass the test implemented by the provided function.
Type: Function
It is a predicate, to test each element of the set.
Returns: Number
Reduces the set to a single value, by executing the provided function for each element in the set (from left-to-right).
Type: Function
Function to be executed for each element in the set.
Type: Number
Optional. A value to be passed to the function as the initial value.
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