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[Kotlin] ์ œ๋„ค๋ฆญ ํƒ€์ž…๊ณผ variance ํ•œ์ •์ž๋ฅผ ํ™œ์šฉํ•˜๋ผ
... 2022. 4. 29. 15:19

์žฌ์‚ฌ์šฉ์„ ์œ„ํ•œ ๊ณผ๋„ํ•œ ์œ ์—ฐ์„ฑ ๋‹ค์–‘ํ•œ ํƒ€์ž…์— ๋™์ผํ•œ ๋กœ์ง์„ ์ ์šฉํ•˜๊ธฐ ์œ„ํ•ด ์ฝ”๋“œ ์žฌ์‚ฌ์šฉ์„ ๊ณผ๋„ํ•˜๊ฒŒ ํ•˜๋ ค๋Š” ๊ฒฝ์šฐ๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค. ํŒŒ๋ผ๋ฏธํ„ฐ๋ฅผ ์ „๋ถ€ Any๋กœ ๋ฐ›๋Š” ๊ฒƒ์ด ๋Œ€ํ‘œ์ ์ธ ์˜ˆ์‹œ์ž…๋‹ˆ๋‹ค. open class Car class K3 : Car() class Avante : Car() //โ€œ์ฐจ์— ๋Œ€ํ•œ ์„ค๋ช…์„œโ€ ํ•จ์ˆ˜ fun getInstruction(car: Array) { println("car = ${car.size}") } ๋งŽ์ด ๊ทน๋‹จ์ ์ธ ์˜ˆ์ œ์ด๊ธฐ๋Š” ํ•ฉ๋‹ˆ๋‹ค.. open class Fruit class Apple : Fruit() fun main() { val k3 = K3("k3", "๊ธฐ์•„") val avante = Avante("์•„๋ฐ˜๋–ผ", "ํ˜„๋Œ€") val fruits: Array = arrayOf(Apple())..

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