USearchError is the only error the SDK throws, and every method says so with throws(USearchError), so a catch reads error.status with no cast. Status has one constant per usearch_status_*_k of the C interface, and its description spells it as the library does, like invalid-argument.
do {
try index.reserve(1 << 40)
} catch {
print(error.status, error.message)
}NumKong exports a Status of its own, so a file importing both spells this one USearch.Status.
StatusWhat went wrong, in the vocabulary the engine and this binding share - one constant per engine status.20struct StatusValidation performed here before a call crosses reports the status the engine would have reported for the same fault.
A USearchError never carries success or deferred; a Deferred call reports both.
Hashable, Sendable, CustomStringConvertible, EquatablesuccessThe call succeeded and carries no message.static let success: StatusdeferredThe call was submitted deferred and is not final yet.static let deferred: StatusoutOfMemoryAn allocation or reservation could not be satisfied.static let outOfMemory: StatusshapeMismatchDimensionality or row counts disagree.static let shapeMismatch: StatusunsupportedLayoutA stride or packing the engine cannot traverse.static let unsupportedLayout: StatusunknownKindA scalar, metric, or residency tag this build does not know.static let unknownKind: StatusreadOnlyA mutating verb reached a handle that serves its checkpoint in place.static let readOnly: StatusioA file could not be opened, read, written, or parsed.static let io: StatusdeviceA device could not be selected, or its memory could not be claimed.static let device: StatusmalformedA caller-supplied representation could not be decoded.static let malformed: StatusinternalThe library reported neither success nor a failure.static let `internal`: StatusoverflowA hard design ceiling was reached, like the 32-bit ID space.static let overflow: StatusuninitializedThe verb needs a prior successful reservation that never happened.static let uninitialized: StatusconfigMismatchThe request contradicts an already-frozen configuration.static let configMismatch: StatuscontendedA call was refused rather than waited for - a full deferred table, a busy arena, or a blocking call from inside a callback of the executor it would wait on.static let contended: StatuscancelledA progress handler asked the operation to stop; what the finished increments leave behind is each verb's own contract.static let cancelled: StatusunsupportedThe verb is declared for every residency but this one does not implement it.static let unsupported: StatusinvalidArgumentAn argument breaks the verb's contract.static let invalidArgument: StatusdescriptionThe status rendered as the library spells it, like invalid-argument.var description: String { get }initReads a spelling back, and nil for one no status carries.init?(name: String)USearchErrorOne failed call: a status every caller can branch on, and the detail the status cannot carry.5struct USearchErrorError, CustomStringConvertible, Equatable, SendablestatusThe failure identity, shared with every other SDK.let status: StatusmessageThe library's static detail, or this binding's own when it rejected the call.let message: StringcauseWhat a caller's closure threw to stop the call, and nil for every other failure.let cause: (any Swift.Error)?descriptionvar description: String { get }==Equal in status and message, which is as far as an arbitrary cause compares.static func == (left: USearchError, right: USearchError) -> Bool