Example of Swift Combine CurrentValueSubject

main.swift

//
//  main.swift
//
//  Created by Eric Rabil on 3/3/22.
//

import Foundation
import Combine

let foo = CurrentValueSubject<String, Never>("bar")
var bag = Set<AnyCancellable>()

foo.sink { newValue in
    print(newValue)
}.store(in: &bag)

foo.sink { newValue in
    print(newValue)
}.store(in: &bag)

foo.send("baz")

/*
 Output:
 bar
 bar
 baz
 baz
 */