Combine 실습 6

import Combine

let arrPublisher = [1, 2, 3].publisher
let queue = DispatchQueue(label: "custom")

let subscription = arrPublisher
	.subscribe(on: queue)
	.map { vlaue -> Int in
    	print("transform: \(value), thread: \(Thread.current)")
        return value
    }
    .receive(on: DispatchQueue.main)
	.sink { value in
	print("Receive Value:\(value), thread: \(Thread.current)")
}