API Reference > bentleyjs-core > Ids > Id64 > Id64.Uint32Set Id64.Uint32Set Class A specialized replacement for Set optimized for performance-critical code which represents large sets of 64-bit IDs as pairs of 32-bit integers. The internal representation is a Map<number, Set> where the Map key is the upper 4 bytes of the IDs and the Set elements are the lower 4 bytes of the IDs. Because the upper 4 bytes store the 24-bit briefcase ID plus the upper 8 bits of the local ID, there will be a very small distribution of unique Map keys. To further optimize this data type, the following assumptions are made regarding the { lower, upper } inputs, and no validation is performed to confirm them: The inputs are unsigned 32-bit integers; The inputs represent a valid Id64String (e.g., local ID is not zero). see Id64.Uint32Map for a similarly-optimized replacement for Map<Id64String, T> Methods Name Description constructor(ids?: Id64Arg): Id64.Uint32Set Construct a new Uint32Set. add(low: number, high: number): void Add an Id to the set. addId(id: string): void Add an Id to the set. addIds(ids: Id64Arg): void Add any number of Ids to the set. clear(): void Remove all contents of this set. delete(low: number, high: number): void Remove an Id from the set. deleteId(id: string): void Remove an Id from the set. deleteIds(ids: Id64Arg): void Remove any number of Ids from the set. forEach(func: (lo: number, hi: number) => void): void Execute a function against each Id in this set. has(low: number, high: number): boolean Returns true if the set contains the specified Id. hasId(id: string): boolean Returns true if the set contains the specified Id. toId64Array(): Id64Array Populates and returns an array of all Ids contained in the set. toId64Set(): Id64Set Populates and returns a set of all Ids contained in the set. Properties Name Type Description _map ProtectedReadonly Map<number, Set<number>> isEmpty Accessor ReadOnly boolean Returns true if the set contains no Ids. size Accessor ReadOnly number Returns the number of Ids contained in the set. Defined in core/bentley/src/Id.ts Line 513 Last Updated: 12 June, 2024