CMMetadataDataTypeRegistryDataTypeIsRegistered(_:)
Returns a Boolean value that indicates the registration status of a data type identifier.
Declaration
func CMMetadataDataTypeRegistryDataTypeIsRegistered(_ dataType: CFString) -> BoolParameters
- dataType:
Identifier of the data type to be checked.
Return Value
kCFBooleanTrue if the data type has been registered; kCFBooleanFalse otherwise.
See Also
Inspecting Metadata
CMMetadataDataTypeRegistryGetDataTypeDescription(_:)CMMetadataDataTypeRegistryGetConformingDataTypes(_:)CMMetadataDataTypeRegistryDataTypeConformsToDataType(_:conformsTo:)CMMetadataDataTypeRegistryDataTypeIsBaseDataType(_:)CMMetadataDataTypeRegistryGetBaseDataTypeForConformingDataType(_:)CMMetadataDataTypeRegistryGetBaseDataTypes()