{"id":2526,"date":"2024-10-06T17:45:00","date_gmt":"2024-10-06T08:45:00","guid":{"rendered":"http:\/\/batmask.dothome.co.kr\/?p=2526"},"modified":"2024-10-06T17:45:00","modified_gmt":"2024-10-06T08:45:00","slug":"kotlin-%ec%97%90-%ec%9d%b5%ec%88%99%ed%95%b4%ec%a7%80%ea%b8%b0-%eb%82%af%ec%84%a0-%eb%ac%b8%eb%b2%95%eb%93%a4-%ec%a0%95%eb%a6%ac-2","status":"publish","type":"post","link":"http:\/\/batmask.net\/index.php\/2024\/10\/06\/2526\/","title":{"rendered":"Kotlin \uc5d0 \uc775\uc219\ud574\uc9c0\uae30 : \ub0af\uc120 \ubb38\ubc95\ub4e4 \uc815\ub9ac #2"},"content":{"rendered":"\n

Destructuring : https:\/\/kotlinlang.org\/docs\/destructuring-declarations.html<\/a><\/h3>\n\n\n\n

\ucf54\ud2c0\ub9b0\uc740 \ud074\ub798\uc2a4\uc758 \uc18d\uc131\uac12\uc744 \ud558\ub098\uc529 \ubc1b\uc544\uc624\uc9c0 \uc54a\uace0, \ud55c\ubc88\uc5d0 \uc5ec\ub7ec \ubcc0\uc218\uc5d0 \ubc1b\uc544\uc624\ub294 \ubc29\ubc95\uc744 \uc81c\uacf5\ud55c\ub2e4. \uc774\ub97c destructuring\uc774\ub77c\uace0 \ud55c\ub2e4. \uc608\ub97c\ub4e4\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n

<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
val<\/span> (name, age) <\/span>=<\/span> person<\/span><\/span>\n<\/span>\nval<\/span> name <\/span>=<\/span> person.<\/span>component1<\/span>()<\/span><\/span>\nval<\/span> age <\/span>=<\/span> person.<\/span>component2<\/span>()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\uc704 \ucf54\ub4dc\ub294 person\uc5d0 \uc788\ub294 \uac12\uc744 name\uacfc age \ubcc0\uc218\uc5d0 \ubc1b\uc544\uc624\uace0 \uc788\ub2e4. \uc774\uac8c \uac00\ub2a5\ud55c \uc774\uc720\ub294 \uc704\uc5d0 \ud480\uc5b4\uc4f4 \ub0b4\uc6a9\ucc98\ub7fc  component1(), component2()\ub85c \ud574\uc11d\ub418\uae30 \ub54c\ubb38\uc774\ub2e4.<\/p>\n\n\n\n
component1, component2 \ub4f1\uc758 \ud568\uc218\ub294 \uacc4\uc18d 3, 4 \ub4f1\uc73c\ub85c \uc774\uc5b4\uc9c8 \uc218 \uc788\ub294\ub370, \uc774\ub97c componentN()\uc774\ub77c\uace0 \ud558\uba70, \uc774\ub294 operator\ub85c \uad6c\ud604\ud574\uc57c \ud55c\ub2e4. \uc608\ub97c\ub4e4\uba74 Map\uc5d0\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub418\uc5b4 \uc788\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
operator<\/span> <\/span>fun<\/span> <<\/span>K<\/span>, <\/span>V<\/span>> <\/span>Map<\/span><<\/span>K, V<\/span>><\/span>.<\/span>iterator<\/span>(): <\/span>Iterator<\/span><<\/span>Map<\/span>.<\/span>Entry<\/span><<\/span>K<\/span>, <\/span>V<\/span>>> <\/span>=<\/span> <\/span>entrySet<\/span>().<\/span>iterator<\/span>()<\/span><\/span>\noperator<\/span> <\/span>fun<\/span> <<\/span>K<\/span>, <\/span>V<\/span>> <\/span>Map<\/span>.<\/span>Entry<\/span><<\/span>K, V<\/span>><\/span>.<\/span>component1<\/span>() <\/span>=<\/span> <\/span>getKey<\/span>()<\/span><\/span>\noperator<\/span> <\/span>fun<\/span> <<\/span>K<\/span>, <\/span>V<\/span>> <\/span>Map<\/span>.<\/span>Entry<\/span><<\/span>K, V<\/span>><\/span>.<\/span>component2<\/span>() <\/span>=<\/span> <\/span>getValue<\/span>()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\ub9cc\uc57d, \uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 \uac12\uc744 \ubc1b\ub294\uacbd\uc6b0 \ub2e4\uc74c\uacfc \uac19\uc774 \ubcc0\uc218 \ub300\uc2e0\uc5d0 \uc5b8\ub354\uc2a4\ucf54\uc5b4 ‘_’\ub97c \uc774\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
val<\/span> (_, status) <\/span>=<\/span> <\/span>getResult<\/span>()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\ub78c\ub2e4 \ud45c\ud604\uc2dd\uc5d0\uc11c\ub3c4 destructuring\uc744 \uc774\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
map.<\/span>mapValues<\/span> { entry <\/span>-><\/span> <\/span>"${entry.<\/span>value<\/span>}!"<\/span> }<\/span><\/span>\nmap.<\/span>mapValues<\/span> { (key, <\/span>value<\/span>) <\/span>-><\/span> <\/span>"<\/span>$value<\/span>!"<\/span> }<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\"seperator\"<\/figure>\n\n\n\n
data class : https:\/\/kotlinlang.org\/docs\/data-classes.html<\/a><\/h3>\n\n\n\n
 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\uc5d0\uc11c \uad6c\uc870\uc801\uc778 \ub370\uc774\ud130\ub97c \uc800\uc7a5\ud558\uae30 \uc704\ud574 C \ub77c\uba74 \uad6c\uc870\uccb4\ub97c \uc774\uc6a9\ud558\uace0, OOP \uc5b8\uc5b4\ub77c\uba74 \ud074\ub798\uc2a4\ub97c \uc0c8\ub85c \ub9cc\ub4e4\uac8c \ub41c\ub2e4. Kotlin\uc5d0\uc11c\ub294 data class\ub77c\ub294 \uac83\uc73c\ub85c \ucf54\ub4dc\ub3c4 \ub2e8\uc21c\ud558\uac8c \ub9cc\ub4e4\uace0 \uc0ac\uc6a9\ub3c4 \uc27d\uac8c \uc9c0\uc6d0\ud574\uc8fc\uace0 \uc788\ub2e4. \ud074\ub798\uc2a4\uc5d0 data \ud0a4\uc6cc\ub4dc\ub97c \uc0ac\uc6a9\ud55c\ub2e4. \uac00\uc7a5 \uac04\ub2e8\ud55c \ud615\ud0dc\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
data<\/span> <\/span>class<\/span> <\/span>User<\/span>(<\/span>val<\/span> name: <\/span>String<\/span>, <\/span>val<\/span> age: <\/span>Int<\/span>)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\ud074\ub798\uc2a4 \ubc14\ub514\ub3c4 \ud544\uc694\uc5c6\uace0, property\ub4e4\ub9cc \ub098\uc5f4\ub418\uc5b4 \uc788\ub294 \uac83\uc73c\ub85c \ub9e4\uc6b0 \ub2e8\uc21c\ud558\uac8c \ud45c\ud604\uc774 \uac00\ub2a5\ud558\ub2e4. \uc774\ub807\uac8c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc774\uc720\ub294 data class\uc5d0\uc11c \uae30\ubcf8\uc801\uc73c\ub85c \ub370\uc774\ud130\ub97c \ub2e4\ub8e8\ub294\ub370 \ud544\uc694\ud55c equals()\/ hashCode(), toString(), componentN(), copy() \ub97c \uad6c\ud604\ud574\uc8fc\uace0 \uc788\uae30 \ub54c\ubb38\uc774\ub2e4. \ubb3c\ub860, \ud074\ub798\uc2a4 \ubc14\ub514\ub3c4 \ud544\uc694\ud558\ub2e4\uba74 \uad6c\ud604 \uac00\ub2a5\ud558\ub2e4.<\/p>\n\n\n\n
data class \ub294 \ub9e4\uc6b0 \uc720\uc6a9\ud55c\ub370, Sealed class\uc640 \uc9dd\uc744\uc774\ub904 \uc790\uc8fc \uc0ac\uc6a9\ub41c\ub2e4. <\/p>\n\n\n\n
\"seperator\"<\/figure>\n\n\n\n
enum \uacfc sealed class : 
https:\/\/kotlinlang.org\/docs\/enum-classes.html<\/a>
https:\/\/kotlinlang.org\/docs\/sealed-classes.html<\/a>
<\/h3>\n\n\n\n
 \uc774\uc5d0 \ub300\ud574\uc120 \uc608\uc804\uc5d0 \ud55c \ubc88 \uc815\ub9ac\ud588\ub358 \uc801\uc774 \uc788\uc5b4 \uc790\uc138\ud55c \uc124\uba85\uc740 \uc0dd\ub7b5\ud55c\ub2e4 : http:\/\/batmask.dothome.co.kr\/index.php\/2021\/06\/29\/869\/<\/a><\/p>\n\n\n\n
enum\uc740 \ub2e4\ub978 \uc5b8\uc5b4\uc640 \uc720\uc0ac\ud558\uac8c \uc0c1\uc218\ub97c \ub098\uc5f4\ud558\uc5ec \uc0ac\uc6a9\ud560 \ub54c \uc720\uc6a9\ud558\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
enum<\/span> <\/span>class<\/span> <\/span>Direction<\/span> {<\/span><\/span>\n    NORTH, SOUTH, WEST, EAST<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nenum<\/span> <\/span>class<\/span> <\/span>Color<\/span>(<\/span>val<\/span> rgb: <\/span>Int<\/span>) {<\/span><\/span>\n    <\/span>RED<\/span>(<\/span>0xFF0000<\/span>),<\/span><\/span>\n    <\/span>GREEN<\/span>(<\/span>0x00FF00<\/span>),<\/span><\/span>\n    <\/span>BLUE<\/span>(<\/span>0x0000FF<\/span>)<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
valueOf(), entries, name, ordinal\uc744 \uc774\uc6a9\ud574 \ub2e4\uc74c\uacfc \uac19\uc774 \uc0ac\uc6a9 \uac00\ub2a5\ud558\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
enum<\/span> <\/span>class<\/span> <\/span>RGB<\/span> { RED, GREEN, BLUE }<\/span><\/span>\n<\/span>\nfun<\/span> <\/span>main<\/span>() {<\/span><\/span>\n    <\/span>for<\/span> (color <\/span>in<\/span> RGB.entries) <\/span>println<\/span>(color.<\/span>toString<\/span>()) <\/span>\/\/ prints RED, GREEN, BLUE<\/span><\/span>\n    <\/span>println<\/span>(<\/span>"The first color is: ${RGB.<\/span>valueOf<\/span>("RED")}"<\/span>) <\/span>\/\/ prints "The first color is: RED"<\/span><\/span>\n}<\/span><\/span>\n..<\/span>.<\/span><\/span>\nprintln<\/span>(RGB.RED.name)    <\/span>\/\/ prints RED<\/span><\/span>\nprintln<\/span>(RGB.RED.ordinal) <\/span>\/\/ prints 0<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\ucf54\ud2c0\ub9b0\uc5d0\uc11c\ub294 enum\uacfc \uc720\uc0ac\ud55c \uc5ed\ud560\uc744 \ud558\ub294\ub370 sealed class\ub97c \uc790\uc8fc \uc774\uc6a9\ud55c\ub2e4. sealed class\ub098 \uc778\ud130\ud398\uc774\uc2a4\ub294 \uc6d0\ub798, \uc0c1\uc18d\uc744 \ubaa8\ub4c8\uacfc \ud328\ud0a4\uc9c0\uc5d0 \uc81c\ud55c \ud558\ub294 \ud0a4\uc6cc\ub4dc\ub85c, \ucef4\ud30c\uc77c \ud0c0\uc784\uc5d0\ub9cc \uc778\uc2dd\ud558\uc5ec \uc0c1\uc18d\uc774 \uac00\ub2a5\ud558\ub2e4. \uadf8\ub7ec\ub2c8\uae4c \ubcc4\ub3c4\ub85c \ucef4\ud30c\uc77c\ub41c \ubaa8\ub4c8\uac04 \uc0c1\uc18d\uc774 \uc81c\ud55c\ub41c\ub2e4. \ub77c\uc774\ube0c\ub7ec\ub9ac\uc758 \ub0a8\uc6a9\uc744 \ub9c9\uae30 \uc704\ud574 \uc0ac\uc6a9\uac00\ub2a5\ud55c \ubc29\ubc95\uc774\uae30\ub3c4 \ud558\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
sealed<\/span> <\/span>class<\/span> <\/span>UIState<\/span> {<\/span><\/span>\n    <\/span>data<\/span> <\/span>object<\/span> <\/span>Loading<\/span> : <\/span>UIState<\/span>()<\/span><\/span>\n    <\/span>data<\/span> <\/span>class<\/span> <\/span>Success<\/span>(<\/span>val<\/span> <\/span>data<\/span>: <\/span>String<\/span>) : <\/span>UIState<\/span>()<\/span><\/span>\n    <\/span>data<\/span> <\/span>class<\/span> <\/span>Error<\/span>(<\/span>val<\/span> exception: <\/span>Exception<\/span>) : <\/span>UIState<\/span>()<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nfun<\/span> <\/span>updateUI<\/span>(state: <\/span>UIState<\/span>) {<\/span><\/span>\n    <\/span>when<\/span> (state) {<\/span><\/span>\n        <\/span>is<\/span> UIState.Loading <\/span>-><\/span> <\/span>showLoadingIndicator<\/span>()<\/span><\/span>\n        <\/span>is<\/span> UIState.Success <\/span>-><\/span> <\/span>showData<\/span>(state.<\/span>data<\/span>)<\/span><\/span>\n        <\/span>is<\/span> UIState.Error <\/span>-><\/span> <\/span>showError<\/span>(state.exception)<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
 \uc608\uc804 \ubc29\uc2dd\uc758 \ud504\ub85c\uadf8\ub798\ubc0d\uc774\ub77c\uba74, \uc544\ub9c8\ub3c4 enum\uc73c\ub85c \ucc98\ub9ac\ud588\uc744 \uc0c1\ud0dc\ub4e4\uc774\ub2e4. sealed class UIState\ub97c \uc0c1\uc18d\ubc1b\uc544 data object \uc640 class\ub4e4\uc744 \ub9cc\ub4e4\uc5c8\ub2e4. \uc774\ub97c UI state\ub97c \uccb4\ud06c\ud558\ub294 when\ubb38\uc5d0\uc11c \uc0ac\uc6a9\ud558\uace0 \uc788\ub2e4. data object\ub85c \ub9cc\ub4e4\uba74 \ud558\ub098\uc758 \uac1d\uccb4\ub9cc \ub2e4\ub8e8\uae30 \ub54c\ubb38\uc5d0 enum\uacfc \uac19\uc774 \uc0c1\uc218\ucc98\ub7fc \ub2e4\ub8f0 \uc218 \uc788\uc73c\uba70, data class \ub85c \uc0dd\uc131\ud558\uba74 enum\uacfc\ub294 \ub2e4\ub974\uac8c \uc5ec\ub7ec\uac1c\uc758 \uc778\uc2a4\ud134\uc2a4 \uc0dd\uc131\uc774 \uac00\ub2a5\ud558\ub2e4. \ub610\ud55c, data class\uc5d0 \uc5ec\ub7ec \uc815\ubcf4\ub4e4\uc744 \uc800\uc7a5\ud558\uace0 \uc0ac\uc6a9\ud558\ub294\uac8c enum\ubcf4\ub2e4 \ud6e8\uc52c \uac04\ud3b8\ud558\uace0 \uc720\uc6a9\ud558\ub2e4. \ub610\ud558\ub098\uc758 \uc608\uac00 \ub098\uc640\uc788\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
sealed<\/span> <\/span>class<\/span> <\/span>Payment<\/span> {<\/span><\/span>\n    <\/span>data<\/span> <\/span>class<\/span> <\/span>CreditCard<\/span>(<\/span>val<\/span> number: <\/span>String<\/span>, <\/span>val<\/span> expiryDate: <\/span>String<\/span>) : <\/span>Payment<\/span>()<\/span><\/span>\n    <\/span>data<\/span> <\/span>class<\/span> <\/span>PayPal<\/span>(<\/span>val<\/span> email: <\/span>String<\/span>) : <\/span>Payment<\/span>()<\/span><\/span>\n    <\/span>data<\/span> <\/span>object<\/span> <\/span>Cash<\/span> : <\/span>Payment<\/span>()<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nfun<\/span> <\/span>processPayment<\/span>(payment: <\/span>Payment<\/span>) {<\/span><\/span>\n    <\/span>when<\/span> (payment) {<\/span><\/span>\n        <\/span>is<\/span> Payment.CreditCard <\/span>-><\/span> <\/span>processCreditCardPayment<\/span>(payment.number, payment.expiryDate)<\/span><\/span>\n        <\/span>is<\/span> Payment.PayPal <\/span>-><\/span> <\/span>processPayPalPayment<\/span>(payment.email)<\/span><\/span>\n        <\/span>is<\/span> Payment.Cash <\/span>-><\/span> <\/span>processCashPayment<\/span>()<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Destructuring : https:\/\/kotlinlang.org\/docs\/destructuring-declarations.html \ucf54\ud2c0\ub9b0\uc740 \ud074\ub798\uc2a4\uc758 \uc18d\uc131\uac12\uc744 \ud558\ub098\uc529 \ubc1b\uc544\uc624\uc9c0 \uc54a\uace0, \ud55c\ubc88\uc5d0 \uc5ec\ub7ec \ubcc0\uc218\uc5d0 \ubc1b\uc544\uc624\ub294 \ubc29\ubc95\uc744 \uc81c\uacf5\ud55c\ub2e4. \uc774\ub97c destructuring\uc774\ub77c\uace0 \ud55c\ub2e4. \uc608\ub97c\ub4e4\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uc0ac\uc6a9\ud55c\ub2e4. \uc704 \ucf54\ub4dc\ub294 person\uc5d0 \uc788\ub294 \uac12\uc744 name\uacfc age \ubcc0\uc218\uc5d0 \ubc1b\uc544\uc624\uace0 \uc788\ub2e4. \uc774\uac8c \uac00\ub2a5\ud55c \uc774\uc720\ub294 \uc704\uc5d0 \ud480\uc5b4\uc4f4 \ub0b4\uc6a9\ucc98\ub7fc component1(), component2()\ub85c \ud574\uc11d\ub418\uae30 \ub54c\ubb38\uc774\ub2e4. component1, component2 \ub4f1\uc758 \ud568\uc218\ub294 \uacc4\uc18d 3, 4 \ub4f1\uc73c\ub85c \uc774\uc5b4\uc9c8 \uc218 \uc788\ub294\ub370, \uc774\ub97c componentN()\uc774\ub77c\uace0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[38,41],"class_list":["post-2526","post","type-post","status-publish","format-standard","hentry","category-kotlin","tag-kotlin","tag-kotlin-kr"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/posts\/2526","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/comments?post=2526"}],"version-history":[{"count":25,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/posts\/2526\/revisions"}],"predecessor-version":[{"id":2585,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/posts\/2526\/revisions\/2585"}],"wp:attachment":[{"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/media?parent=2526"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/categories?post=2526"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/tags?post=2526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\uac01\uac01\uc758 payment \ubc29\ubc95\uc5d0 \ub530\ub77c \ub2e4\ub978 \uc815\ubcf4\ub4e4\uc744 \ub4e4\uace0 \uc788\uace0, \uc774\ub97c \ub9e4\uc6b0 \ud3b8\ub9ac\ud558\uac8c \ucc98\ub9ac\ud558\uace0 \uc788\ub2e4. \uac19\uc740 \uc288\ud37c\ud074\ub798\uc2a4\uc778 payment\ub97c \uac00\uc9c0\uace0 CreditCard, PayPal, Cash \uac01\uac01\uc744 \uce90\uc2a4\ud305 \uc5c6\uc774 \ucc98\ub9ac\ud558\uace0 \uc788\ub294\ub370, \uc774\ub294 \ucf54\ud2c0\ub9b0\uc758 \uc2a4\ub9c8\ud2b8 \uce90\uc2a4\ud2b8( https:\/\/kotlinlang.org\/docs\/typecasts.html#smart-casts<\/a> ) \uae30\ub2a5 \ub355\ubd84\uc774\ub2e4. \uc2a4\ub9c8\ud2b8 \uce90\uc2a4\ud2b8\ub294 \ud0c0\uc785\uc744 \uccb4\ud06c\ud558\ub294 \uacbd\uc6b0, \uc54c\uc544\uc11c \uce90\uc2a4\ud305\uc744 \ud574\uc8fc\uac8c \ub41c\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"
 Sealed class\ub97c enum\ub300\uc2e0\uc5d0 \uc720\uc6a9\ud558\uac8c \uc0ac\uc6a9\ud558\ub294 \uc608\uac00 \uc544\uc608 \uacf5\uc2dd\ubb38\uc11c\ud654 \ub418\uc5b4 \uc788\ub2e4. ( https:\/\/kotlinlang.org\/docs\/sealed-classes.html#use-case-scenarios<\/a> )<\/p>\n\n\n\n