Subject

<aside> ๐Ÿ‘‰ stream์— send(_:)๋ฅผ ํ˜ธ์ถœํ•ด ๊ฐ’์„ ์ฃผ์ž…ํ•  ์ˆ˜ ์žˆ๋Š” Publisher

</aside>

CurrentValueSubject

<aside> ๐Ÿ‘‰ ๊ฐ€์žฅ ์ตœ๊ทผ์— Published๋œ ๊ฐ’์˜ ๋ฒ„ํผ๋ฅผ ์œ ์ง€ํ•˜๋Š” Publisher

</aside>

PassthroughSubject

<aside> ๐Ÿ‘‰ downstream์˜ subscriber๋“ค์—๊ฒŒ ๊ฐ’์„ ์ „ํ•˜๋Š” Publisher

</aside>