Class

# Set

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Set

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## Description

A collection that stores unique values with no duplicates. Set uses case-sensitive comparison for strings, meaning 'Apple', 'apple', and 'APPLE' are treated as distinct values. Values can be of any type that can be stored in a Variant. Sets are unordered collections optimized for fast membership testing and set operations like union, intersection, and difference. Use Set when you need to ensure uniqueness of elements or perform mathematical set operations on collections.

## Properties

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| Name               | Type                               | Read-Only | Shared |
|--------------------|------------------------------------|-----------|--------|
| `Count<set.count>` | `Integer</api/data_types/integer>` | ✓         |        |

## Methods

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| Name                                       | Parameters                                                                                                                           | Returns                                | Shared |
|--------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------|--------|
| `Add<set.add>`                             | item As `Variant</api/data_types/variant>`, `ParamArray</api/language/paramarray>` moreItems() As `Variant</api/data_types/variant>` |                                        |        |
| `Complement<set.complement>`               | otherSet As Set                                                                                                                      | Set                                    |        |
| `Constructor<set.constructor>`             | otherSet As Set                                                                                                                      |                                        |        |
| `Differences<set.differences>`             | otherSet As Set                                                                                                                      | Set                                    |        |
| `FromArray<set.fromarray>`                 | doubleArray() As `Double</api/data_types/double>`                                                                                    | Set                                    | ✓      |
|                                            | int32Array() As `Int32</api/data_types/additional_types/int32>`                                                                      | Set                                    | ✓      |
|                                            | int64Array() As `Int64</api/data_types/additional_types/int64>`                                                                      | Set                                    | ✓      |
|                                            | objectArray() As `Object</api/data_types/additional_types/object>`                                                                   | Set                                    | ✓      |
|                                            | singleArray() As `Single</api/data_types/single>`                                                                                    | Set                                    | ✓      |
|                                            | stringArray() As `String</api/data_types/string>`                                                                                    | Set                                    | ✓      |
|                                            | variantArray() As `Variant</api/data_types/variant>`                                                                                 | Set                                    | ✓      |
| `FromDictionary<set.fromdictionary>`       | dict As `Dictionary</api/language/dictionary>`                                                                                       | Set                                    | ✓      |
| `HasMember<set.hasmember>`                 | item As `Variant</api/data_types/variant>`                                                                                           | `Boolean</api/data_types/boolean>`     |        |
| `Intersection<set.intersection>`           | otherSet As Set                                                                                                                      | Set                                    |        |
| `Intersects<set.intersects>`               | otherSet As Set                                                                                                                      | `Boolean</api/data_types/boolean>`     |        |
| `IsSubsetOf<set.issubsetof>`               | otherSet As Set                                                                                                                      | `Boolean</api/data_types/boolean>`     |        |
| `Iterator<set.iterator>`                   |                                                                                                                                      | `Iterator</api/language/iterator>`     |        |
| `Operator_Add<set.operator_add>`           | otherSet As Set                                                                                                                      | Set                                    |        |
| `Operator_Subtract<set.operator_subtract>` | otherSet As Set                                                                                                                      | Set                                    |        |
| `Pop<set.pop>`                             |                                                                                                                                      | `Variant</api/data_types/variant>`     |        |
| `Remove<set.remove>`                       | item As `Variant</api/data_types/variant>`                                                                                           |                                        |        |
| `RemoveAll<set.removeall>`                 |                                                                                                                                      |                                        |        |
| `ToArray<set.toarray>`                     |                                                                                                                                      | `Variant()</api/data_types/variant>`   |        |
| `ToDictionary<set.todictionary>`           |                                                                                                                                      | `Dictionary</api/language/dictionary>` |        |
| `Union<set.union>`                         | otherSet As Set                                                                                                                      | Set                                    |        |

## Property descriptions

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Set.Count

**Count** As `Integer</api/data_types/integer>`

> The number of values in the <span class="title-ref">Set</span>.
>
> This property is read-only.

## Method descriptions

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Set.Add

**Add**(item As `Variant</api/data_types/variant>`, `ParamArray</api/language/paramarray>` moreItems() As `Variant</api/data_types/variant>`)

> Adds the *item(s)* to the <span class="title-ref">Set</span>.

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Set.Complement

**Complement**(otherSet As Set) As Set

> Returns a <span class="title-ref">Set</span> whose members appear in the <span class="title-ref">Set</span> but are not in the *otherSet*.

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Set.Constructor

**Constructor**(otherSet As Set)

> Creates a <span class="title-ref">Set</span> made of members that are identical to the *otherSet* passed.
>
> <div class="note">
>
> <div class="title">
>
> Note
>
> </div>
>
> `Constructors</api/language/constructor>` are special methods called when you create an object with the `New</api/language/New>` keyword and pass in the parameters above.
>
> </div>

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Set.Differences

**Differences**(otherSet As Set) As Set

> Returns a new <span class="title-ref">Set</span> with members that appear in <span class="title-ref">Set</span> or *otherSet*, but not both.

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Set.FromArray

**FromArray**(doubleArray() As `Double</api/data_types/double>`) As Set

> Return a new <span class="title-ref">Set</span> with the elements from the array.
>
> This method is `shared</api/language/shared>`.

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**FromArray**(int32Array() As `Int32</api/data_types/additional_types/int32>`) As Set

> Return a new <span class="title-ref">Set</span> with the elements from the array.
>
> This method is `shared</api/language/shared>`.

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**FromArray**(int64Array() As `Int64</api/data_types/additional_types/int64>`) As Set

> Return a new <span class="title-ref">Set</span> with the elements from the array.
>
> This method is `shared</api/language/shared>`.

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**FromArray**(objectArray() As `Object</api/data_types/additional_types/object>`) As Set

> Return a new <span class="title-ref">Set</span> with the elements from the array.
>
> This method is `shared</api/language/shared>`.

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**FromArray**(singleArray() As `Single</api/data_types/single>`) As Set

> Return a new <span class="title-ref">Set</span> with the elements from the array.
>
> This method is `shared</api/language/shared>`.

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**FromArray**(stringArray() As `String</api/data_types/string>`) As Set

> Return a new <span class="title-ref">Set</span> with the elements from the array.
>
> This method is `shared</api/language/shared>`.

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**FromArray**(variantArray() As `Variant</api/data_types/variant>`) As Set

> Return a new <span class="title-ref">Set</span> with the elements from the array.
>
> This method is `shared</api/language/shared>`.

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Set.FromDictionary

**FromDictionary**(dict As `Dictionary</api/language/dictionary>`) As Set

> Return a new <span class="title-ref">Set</span> populated with the keys of the `Dictionary</api/language/dictionary>` passed.
>
> This method is `shared</api/language/shared>`.

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Set.HasMember

**HasMember**(item As `Variant</api/data_types/variant>`) As `Boolean</api/data_types/boolean>`

> Returns `True</api/language/true>` if the <span class="title-ref">Set</span> has a member that matches the *item* passed.

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Set.Intersection

**Intersection**(otherSet As Set) As Set

> Returns a new <span class="title-ref">Set</span> with members that are common to the <span class="title-ref">Set</span> and the *otherSet*.

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Set.Intersects

**Intersects**(otherSet As Set) As `Boolean</api/data_types/boolean>`

> Returns `True</api/language/true>` if the <span class="title-ref">Set</span> and the *otherSet* have member values in common.

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Set.IsSubsetOf

**IsSubsetOf**(otherSet As Set) As `Boolean</api/data_types/boolean>`

> Returns `True</api/language/true>` if every member of the <span class="title-ref">Set</span> is present in *otherSet*.

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Set.Iterator

**Iterator** As `Iterator</api/language/iterator>`

> Allows iterating through the <span class="title-ref">Set</span> with `For...Each</api/language/loops/for_each...next>`

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Set.Operator_Add

**Operator_Add**(otherSet As Set) As Set

> Returns a new <span class="title-ref">Set</span> whose members are the union of both the <span class="title-ref">Set</span> and the *otherSet*.

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Set.Operator_Subtract

**Operator_Subtract**(otherSet As Set) As Set

> Returns a copy of the <span class="title-ref">Set</span> minus any values that are also in the *otherSet*.

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Set.Pop

**Pop** As `Variant</api/data_types/variant>`

> Removes and returns an arbitrary member of the <span class="title-ref">Set</span>.
>
> If the <span class="title-ref">Set</span> is empty, a `RuntimeException</api/exceptions/runtimeexception>` occurs.

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Set.Remove

**Remove**(item As `Variant</api/data_types/variant>`)

> Removes the *item* passed.
>
> If the *item* is not found, a `KeyNotFoundException</api/exceptions/keynotfoundexception>` occurs.

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Set.RemoveAll

**RemoveAll**

> Removes all members from the <span class="title-ref">Set</span>.

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Set.ToArray

**ToArray** As `Variant()</api/data_types/variant>`

> Returns a `Variant</api/data_types/variant>` array of the items in the <span class="title-ref">Set</span>.

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Set.ToDictionary

**ToDictionary** As `Dictionary</api/language/dictionary>`

> Returns a `Dictionary</api/language/dictionary>` with the members as keys.

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Set.Union

**Union**(otherSet As Set) As Set

> Returns a new <span class="title-ref">Set</span> that contain the members of the <span class="title-ref">Set</span> and the *otherSet*.

## Interfaces

This class implements the `Iterable</api/language/iterable>` class interface.

## Compatibility

|                       |     |
|-----------------------|-----|
| **Project Types**     | All |
| **Operating Systems** | All |

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`Object</api/data_types/additional_types/object>` parent class

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