RxSwift: BehaviorSubject

• Similar to a PublishSubject except, it will replay the latest .next event to new subscribers.
• Needs a initial value upon creation - If you can’t think of one use a PublishSubject
• Starts with an initial value and replays it or the latest element to new subscribers.
• Useful when you want to repopulate a view with the most recent data.

let subject = BehaviorSubject<String>(value: "8 in a row!")

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