kotlin delegation ‘by’

by

https://youtu.be/YogGlRYCfp0?t=285

처음 시작은 위의 코드를 보고 알아 보게 되었다.

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interface delegation에 대하여

https://youtu.be/zfiohSIZtbo

https://youtu.be/JolUNygXu3s

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property delegation에 대하여

https://kotlinlang.org/docs/reference/delegated-properties.html

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lazy 에 대하여

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-lazy/

https://www.youtube.com/watch?v=orUgnUuYW44

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lazyDeferred의 구현 예시 

https://stackoverflow.com/questions/57447027/how-to-refresh-viewmodel-data-using-kotlin-lazy-loading-coroutine

fun <T> lazyDeferred(block: suspend CoroutineScope.() -> T): Lazy<Deferred<T>> {
    return lazy {
        GlobalScope.async {
            block.invoke(this)
        }
    }
}