predicateForObjectsAssociated(electrocardiogram:)
Returns a predicate that matches symptom samples associated with the specified electrocardiogram.
Declaration
class func predicateForObjectsAssociated(electrocardiogram: HKElectrocardiogram) -> NSPredicateParameters
- electrocardiogram:
The target electrocardiogram.
Return Value
A predicate that matches symptom samples associated with the specified electrocardiogram.
Discussion
If the HKElectrocardiogram sample’s symptomsStatus property is HKElectrocardiogram.SymptomsStatus.present, you can query for symptom samples associated with the electrocardiogram. See Symptom Type Identifiers for a complete list of symptom types.