# periodic(_:delay:) A repeat behavior with a preferred play count and delay using periodic animations. Periodic animations play the effect at regular intervals starting and stopping each time. ``` static func periodic(_ count: Int? = nil, delay: Double? = nil) -> SymbolEffectOptions.RepeatBehavior ``` ## Parameters `count` The preferred number of times to play the effect, or nil to request it play indefinitely. Very large or small values may be clamped. `delay` The preferred delay between repetitions, in seconds, or nil to request the default delay. ## Return Value A new behavior with the preferred play count and delay using periodic animations. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)