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# predicateForObjects(from:)

Returns a predicate that matches any objects that have been associated with the provided workout.

```
class func predicateForObjects(from workout: HKWorkout) -> NSPredicate
```

## Parameters

`workout`

The workout you are searching for.

## Return Value

A predicate that matches any objects that have been added to the provided workout.

## Discussion

Use this convenience method to create a predicate that matches all the HealthKit objects for a given workout. The following sample uses both the convenience method and a predicate format string to create equivalent predicates.

```swift
let workoutObjects = HKQuery.predicateForObjectsFromWorkout(workout)
 
let explicitWorkoutObjects =
    NSPredicate(format: "%K == %@", HKPredicateKeyPathWorkout, workout)
```

## See Also

[`-  addSamples:toWorkout:completion:`](/documentation/HealthKit/HKHealthStore/add(_:to:completion:))

Associates the provided samples with the specified workout.


---

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