# isStrictSubset

Source: https://www.nianticspatial.com/docs/api/swift/NSDK.SceneSegmentationChannels.method-isStrictSubset/

isStrictSubset

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## Declaration

func isStrictSubset(of other: Self) -> Bool

#### Summary

Returns a Boolean value that indicates whether this set is a strict
subset of the given set.
Set *A* is a strict subset of another set *B* if every member of *A* is
also a member of *B* and *B* contains at least one element that is not a
member of *A*.
    let employees: Set = ["Alicia", "Bethany", "Chris", "Diana", "Eric"]
    let attendees: Set = ["Alicia", "Bethany", "Diana"]
    print(attendees.isStrictSubset(of: employees))
    // Prints "true"
    // A set is never a strict subset of itself:
    print(attendees.isStrictSubset(of: attendees))
    // Prints "false"

#### Returns

true if the set is a strict subset of other; otherwise,
  false.

### Parameters

| Name | Type | Summary |
| --- | --- | --- |
| other | Self | - |

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