Instance Method


Add a process object as a child of a progress tree. The inUnitCount indicates the expected work for the progress unit.


func addChild(_ child: Progress, withPendingUnitCount inUnitCount: Int64)



The NSProgress instance to add to the progress tree.


The number of units of work to be carried out by the new child.


The child will be assigned a portion of the receivers total unit count based on inUnitCount. For more information, see Creating a Tree of Progress Objects.

See Also

Current Progress Object

class func current() -> Progress?

Returns the NSProgress instance, if any, associated with the current thread by a previous invocation of becomeCurrent(withPendingUnitCount:).

func becomeCurrent(withPendingUnitCount: Int64)

Sets the receiver as the current progress object of the current thread and specifies the portion of work to be performed by the next child progress object of the receiver.

func resignCurrent()

Balance the most recent previous invocation of becomeCurrent(withPendingUnitCount:) on the same thread by restoring the current progress object to what it was before becomeCurrent(withPendingUnitCount:) was invoked.