ramunasjurgilas

["a1", "b2", "c3", "b4", "a5"]
    .publisher
    .last(where: { $0.hasPrefix("b") })
    .sink { print($0) }

// Output:
//  b4

ramunasjurgilas

["a", "b", "c", "a"]
    .publisher
    .first(where: { $0 == "a" })
    .sink { print($0) }

// Output:
//  a

ramunasjurgilas

(1...2000)
    .publisher
    .ignoreOutput()
    .sink(receiveCompletion: { print($0) }, receiveValue: { print($0) })
    
// Output: 
    finished

// Without ignoreOutput
(1...3)

ramunasjurgilas

["1", "a", "3.5", "2,5"]
    .publisher
    .compactMap { Double($0) }
    .sink { print($0) }

// Output:
//    1.0
//    3.5

ramunasjurgilas

[1,1,2,1,1,3]
    .publisher
    .removeDuplicates()
    .sink { print($0) }

// Output:
//    1
//    2
//    1
//    3

ramunasjurgilas

"KoBrA"
    .publisher
    .filter { $0.isUppercase }
    .sink { print($0) }

// Output:
//    K
//    B
//    A

ramunasjurgilas

(1...4)
    .publisher
    .scan([]) { (values, value) -> [String] in
        values + [String(value)]
}
.sink { print($0) }

// Output:
//    ["1"]
//    ["1", "2"]

ramunasjurgilas

let empty = Empty<String, Never>()

empty
    .replaceEmpty(with: "Replaced")
    .sink(
        receiveCompletion: { print($0) },
        receiveValue: { print($0) }
)

// Output:

ramunasjurgilas

[1, nil, 3]
    .publisher
    .replaceNil(with: -1)
    .sink { print($0) }

// Output:
//  Optional(1)
//  Optional(-1)
//  Optional(3)

ramunasjurgilas

struct Person {
    var name: String
    let age: CurrentValueSubject<Int, Never>

    init(name: String, age: Int) {
        self.name = name
        self.age = CurrentValueSubject(age)
    }
}