API Reference > bentleyjs-core > Ids > CompressedId64Set > CompressedId64Set.decompressArray CompressedId64Set.decompressArray Function Decompress the compact string representation of an Id64Set into an Id64Array. decompressArray(compressedIds: string, out?: Id64Array): Id64Array throws Error if compressedIds is not a well-formed CompressedId64Set. note The Ids are decompressed and appended to the array in ascending order based on their 64-bit numerical values. see CompressedId64Set.compressArray to perform the inverse operation. see CompressedId64Set.decompressSet to decompress as an Id64Set instead. see CompressedId64Set.iterable to efficiently iterate the Ids. Parameter Type Description compressedIds string The compact string representation. out Id64Array If supplied, the Ids will be appended to this array rather than allocating and returning a new array. Returns - Id64Array The array containing the decompressed Ids. Defined in core/bentley/src/CompressedId64Set.ts Line 343 Last Updated: 11 June, 2024