# EquipmentStateCollection A collection of equipment states that can be inspected and modified. ``` struct EquipmentStateCollection ``` ## Topics ### Accessing the subscript [`subscript(id _: EquipmentIdentifier) -> (any MutableEquipmentState)?`](/documentation/TabletopKit/EquipmentStateCollection/subscript(id:)) Returns and/or modifies the state for the equipment with given identifier. [`subscript(ids _: some Sequence) -> [(any MutableEquipmentState)?]`](/documentation/TabletopKit/EquipmentStateCollection/subscript(ids:)) Returns and/or modifies the states for the equipment with given identifiers. [`subscript(of _: E.Type, id _: EquipmentIdentifier) -> E.State?`](/documentation/TabletopKit/EquipmentStateCollection/subscript(of:id:)) Returns and/or modifies the state for the equipment with given identifier and matching type. [`subscript(of _: E.Type, ids _: some Sequence) -> [E.State?]`](/documentation/TabletopKit/EquipmentStateCollection/subscript(of:ids:)) Returns and/or modifies the state for the equipment with given identifier and matching type. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)