DispatchQueue.init(label: , qos: , attributes: , autoreleaseFrequency: , target: )
How to write the parameters, I looked at the original notes for a long time,But I still can't write a serial queue
DispatchQueue.init(label: , qos: , attributes: , autoreleaseFrequency: , target: )
How to write the parameters, I looked at the original notes for a long time,But I still can't write a serial queue