Generic Instance Method
総称体インスタンスメソッド
performAsCurrent(withPendingUnitCount:using:)
Retrieves the current thread’s progress object, executes the specified block, and increments the progress object by the specified units of work.
現在のスレッドのもつ進捗オブジェクトを取って来ます、指定されたプロックを遂行します、そして進捗オブジェクトをその指定された仕事の単位だけ漸増します。
Declaration
宣言
func performAsCurrent<ReturnType>(withPendingUnitCount unitCount: Int64, using work: () throws -> ReturnType) rethrows -> ReturnType
Parameters
パラメータ
unitCountThe number of units of work to increment for the current progress object. This number represents the portion of work that is complete in relation to the total number of units of work for the current thread’s progress object. The units of work for this parameter must be the same units of work as the current progress object’s totalUnitCount property.
workA block that wraps the work you specify to complete for incrementing the current progress.
Return Value
戻り値
The return type and value of the block that you specify for the work parameter.
Discussion
議論
Use this function as a convenience method to wrap an existing method or block to increment the current progress object. This function retrieves the current progress object, does the work you specify in the work block, and returns the value from that block. When the block is complete, this function increments the current progress object. This function is the same as calling becomeCurrent(withPendingUnitCount:), doing the work you specify in the block, and calling resignCurrent().
See Also
参照
Accessing the Current Progress Object
現在の進捗オブジェクトにアクセスする
func becomeCurrent(withPendingUnitCount: Int64)
Sets the progress object as the current object of the current thread, and assigns the amount of work for the next suboperation progress object to perform.
進捗オブジェクトを現在のスレッドの現在のオブジェクトとして設定します、そして次の下位演算進捗オブジェクトに対する仕事の量を実行に割り当てます。
func resignCurrent()
Restores the previous progress object to become the current progress object on the thread.
前の進捗オブジェクトを復元して、スレッド上の現在の進捗オブジェクトになるようにします。