Combine example

comb9.swift

// mapping
_ = [1,2,3,5,8,12]
    .publisher
    .map { $0%2 }
    .sink(receiveValue: { (value) in
        print(value)
    })

Output: 1 0 1 1 0 0

// filtering
_ = [1,2,3,5,8,12]
    .publisher
    .filter { $0%2 == 0 }
    .sink(receiveValue: { (value) in
        print(value)
    })

Output: 2 8 12

// min
_ = [1,2,3,5,8,12]
    .publisher
    .min()
    .sink(receiveValue: { (value) in
        print(value)
    })

Output: 1

// reduce
_ = [1,2,3,5,8,12].publisher.reduce("", { (text, value) -> String in
    if value % 2 == 0 {
        return text + " Even"
    } else {
        return text + " Odd"
    }
}).sink(receiveValue: { (value) in
    print(value)
})

Output: Odd Even Odd Odd Even Even

// decode
struct DummyDecodable: Decodable {
    let userName: String
    let userId: Int
}

let dataProvider = PassthroughSubject<Data, Never>()

_ = dataProvider
    .decode(type: DummyDecodable.self, decoder: JSONDecoder())
    .sink(receiveCompletion: { completion in
        print(completion)
    }, receiveValue: { response in
        print(response.userName)
    })

dataProvider.send(Data("{\"userName\":\"Alex\",\"userId\":1}".utf8))

Output: Alex