iOS 를 매우매우 좋아하는 개발자의 노트 iOS 를 매우매우 좋아하는 개발자의 노트

Observable == Observable sequence == Sequence An Observable is just a sequence, with some special powers. - Asynchronous. Observables produce events over a period of time, which is referred to as emitting. Events can contain values, such as numbers or instances of a custom type, or they can be recognized by gestures, such as taps. When an observable emits an element, it does so in what’s known a..