Progress.PublishingHandler
A block that the system calls when an observed progress object matches the subscription.
Declaration
typealias PublishingHandler = @Sendable (Progress) -> Progress.UnpublishingHandler?Parameters
- progress:
The proxy to the observed progress object.
Return Value
An optional block that the system invokes when the observed progress object invokes unpublish(), the publishing process terminates, or you invoke removeSubscriber(_:).