{"id":45973,"date":"2022-03-23T00:09:29","date_gmt":"2022-03-22T15:09:29","guid":{"rendered":"https:\/\/www.charlezz.com\/?p=45973"},"modified":"2022-03-23T01:59:16","modified_gmt":"2022-03-22T16:59:16","slug":"%ec%9d%b4%ed%8e%99%ed%8b%b0%eb%b8%8c-%ec%bd%94%ed%8b%80%eb%a6%b0-%ec%9a%94%ec%95%bd-%eb%b9%84%ec%9a%a9-%ec%a4%84%ec%9d%b4%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/charlezz.com\/?p=45973","title":{"rendered":"[\uc774\ud399\ud2f0\ube0c \ucf54\ud2c0\ub9b0 \uc694\uc57d] \ube44\uc6a9 \uc904\uc774\uae30"},"content":{"rendered":"\n<p>\uacfc\uac70\uc5d0\ub294 \uba54\ubaa8\ub9ac\uac00 \ube44\uc30c\uace0 \ud558\ub4dc\uc6e8\uc5b4\uc801\uc778 \uc81c\uc57d\uc774 \ucef8\uae30 \ub54c\ubb38\uc5d0 \ud6a8\uc728\uc131(efficiency) \ubc0f \ucd5c\uc801\ud654\uc5d0 \ub9ce\uc740 \ub178\ub825\uc744 \uae30\uc6b8\uc600\ub2e4. (1985\ub144\uc5d0 \ucd9c\uc2dc\ud55c \uac8c\uc784, <a href=\"http:\/\/it.chosun.com\/site\/data\/html_dir\/2020\/09\/18\/2020091803183.html\">\ub9c8\ub9ac\uc624 \ube0c\ub77c\ub354\uc2a4 \uc6a9\ub7c9\uc774 \uc57d 40kB<\/a>\uc774\uc600\ub358 \uac83\uc5d0 \ub300\ud574 \uc0dd\uac01\ud574\ubcf4\uc790)<\/p>\n\n\n\n<p>\ud558\uc9c0\ub9cc \uc624\ub298\ub0a0\uc5d0\ub294 \uc0c1\ub300\uc801\uc73c\ub85c \b\ud558\ub4dc\uc6e8\uc5b4\ubcf4\ub2e4 \uac1c\ubc1c\uc790\uc758 \ubab8\uac12\uc774 \ube44\uc2f8\uae30 \ub54c\ubb38\uc5d0 \uacfc\uac70\ubcf4\ub2e4\ub294 \ud6a8\uc728\uc131\uc5d0 \ub300\ud574 \uc0c1\ub300\uc801\uc73c\ub85c \uad00\ub300\ud558\uac8c \ubc14\ub77c\ubcf8\ub2e4.\ud558\uc9c0\ub9cc \uc5ec\ub7ec\uac00\uc9c0 \uce21\uba74\uc5d0\uc11c \ucd5c\uc801\ud654\ub294 \uc5ec\uc804\ud788 \uc911\uc694\ud558\ub2e4. \uc870\uae08\ub9cc \ucd5c\uc801\ud654\uc5d0 \uc2e0\uacbd\uc744 \uc368\ub3c4 \uc0ac\uc6a9\uc790 \ubc0f \uae30\uc5c5\uc774 \uc5bb\ub294 \uc774\uc775\uc740 \ud06c\uac8c \ub2ec\ub77c \uc9c8 \uc218 \uc788\ub2e4. \ub2e4\uc74c\uc758 \uc608\uc2dc\ub97c \ubcf4\uc790.<\/p>\n\n\n\n<ul><li>\uc11c\ubc84 \uc778\ud504\ub77c\uc5d0 \uc9c0\ubd88\ud558\ub294 \ube44\uc6a9 \uac10\uc18c. \uc0ac\uc6a9\uc790 \ud55c\uba85\ub2f9 \ubc1c\uc0dd\ud558\ub294 \ube44\uc6a9 1\uc6d0\ub9cc \uc808\uc57d\ud574\ub3c4 \uc0ac\uc6a9\uc790\uac00 \ucc9c\ub9cc\uba85\uc774\uba74 \ucc9c\ub9cc\uc6d0 \ube44\uc6a9 \uc808\uc57d.<\/li><li>\ubaa8\ubc14\uc77c\uc5d0\uc11c CPU\uc0ac\uc6a9\ub7c9\uc744 \uc904\uc5ec \ud37c\ud3ec\uba3c\uc2a4 \uac1c\uc120 \ubc0f \ubca0\ud130\ub9ac \uc0ac\uc6a9 \uc2dc\uac04 \uc99d\ub300<\/li><\/ul>\n\n\n\n<p>\uc774\ubc88 \uc7a5\uc5d0\uc11c\ub294 \ube44\uc6a9\uc774 \ud06c\uac8c \ub4e4\uc5b4\uac00\uc9c0 \uc54a\uc73c\uba74\uc11c \ud6a8\uc728\uc801\uc73c\ub85c \ud504\ub85c\uadf8\ub7a8\uc744 \ub9cc\ub4e4 \uc218 \uc788\ub294 \ucd5c\uc801\ud654 \ubc29\ubc95\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ubd88\ud544\uc694\ud55c \uac1d\uccb4 \uc0dd\uc131\uc744 \ud53c\ud558\uc790<\/h2>\n\n\n\n<p>\uac1d\uccb4 \uc0dd\uc131\uc5d0\ub294 \uc5b8\uc81c\ub098 \ube44\uc6a9\uc774 \ub4e0\ub2e4. \uc0c1\ud669\uc5d0 \ub530\ub77c \uad49\uc7a5\ud788 \ud070 \ube44\uc6a9\uc774 \ub4e4\uae30\ub3c4 \ud55c\ub2e4. \uadf8\ub807\uae30 \ub54c\ubb38\uc5d0 \uac1d\uccb4 \uc0dd\uc131\uc744 \uc904\uc774\ub294 \uac83\uc774 \ucd5c\uc801\ud654\uc5d0 \ub3c4\uc6c0\uc774 \ub41c\ub2e4. JVM\uc5d0\uc11c\ub294 \ub3d9\uc77c\ud55c \ubb38\uc790\uc5f4\uc744 \ucc98\ub9ac\ud55c\ub2e4\uba74 <strong>\uae30\uc874\uc758 \ubb38\uc790\uc5f4\uc744 \uc7ac\uc0ac\uc6a9<\/strong>\ud55c\ub2e4. \ub2e4\uc74c \uc608\uc81c\ucf54\ub4dc\ub97c \uc0b4\ud3b4\ubcf4\uc790.<\/p>\n\n\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\nimport kotlinx.coroutines.*\n\nfun main() = runBlocking{\n    var url1:String = &quot;charlezz.com&quot;\n    var url2:String = &quot;charlezz.com&quot;\n    var url3:String = StringBuilder(&quot;charlezz.com&quot;).toString()\n \n    println(url1 === url2) \/\/ true\n    println(url2 === url3) \/\/ false\n    println(url2 === url3.intern()) \/\/ true\n}\n<\/pre>\n\n\n\n<p>url1\uacfc url2\ub294 \ub3d9\uc77c\ud55c \ub808\ud37c\ub7f0\uc2a4\ub2e4. url3\ub294 \uac1d\uccb4\ub97c \uc0c8\ub85c \uc0dd\uc131\ud558\ubbc0\ub85c \uba54\ubaa8\ub9ac\ub97c \ud560\ub2f9\ubc1b\ub294\ub2e4. \uadf8\ub7ec\ubbc0\ub85c url2 \ub610\ub294 url1\uacfc\ub294 \ub2e4\ub978 \ub808\ud37c\ub7f0\uc2a4\ub97c \uac16\ub294\ub2e4. <\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>Note: String.intern()\uc740 JVM \ub0b4 String \ud480\uc5d0\uc11c \ub3d9\ub4f1\ud55c \ubb38\uc790\uc5f4\uc774 \uc788\ub294 \uacbd\uc6b0 \uc774\ub97c \ubc18\ud658\ud55c\ub2e4.<\/p><\/blockquote>\n\n\n\n<p>Integer \ubc0f Long\ucc98\ub7fc \ubc15\uc2a4\ud654\ud55c \uae30\ubcf8 \uc790\ub8cc\ud615\ub3c4 \uc791\uc740 \uac12\uc740 \uc7ac\uc0ac\uc6a9 \ub41c\ub2e4. \uae30\ubcf8\uc801\uc73c\ub85c <strong>Int\ub294 -128~127 \ubc94\uc704\ub97c \uce90\uc2dc\ud574\ub454\ub2e4<\/strong>. \ub2e4\uc74c \uc608\uc81c\ucf54\ub4dc\ub97c \ud655\uc778\ud574\ubcf4\uc790<\/p>\n\n\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\nimport kotlinx.coroutines.*\n\nfun main():Unit{\n    val i1:Int? = 1\n    val i2:Int? = 1\n    \n    println(i1 == i2)\n    println(i1 === i2)\n    \n    val i3:Int? = 1234\n    val i4:Int? = 1234\n    \n    println(i3 == i4)\n    println(i3 === i4)\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\uac1d\ucc44 \uc0dd\uc131 \ube44\uc6a9<\/h3>\n\n\n\n<ul><li>64\ube44\ud2b8 JDK\uc5d0\uc11c \uac1d\uccb4\ub294 8\ubc14\uc774\ud2b8\uc758 \ubc30\uc218\ub9cc\ud07c \uacf5\uac04\uc744 \ucc28\uc9c0\ud558\uace0 \ud5e4\ub354\ub294 12\ubc14\uc774\ud2b8\ub97c \ucc28\uc9c0\ud55c\ub2e4. \uadf8\ub7ec\ubbc0\ub85c \uac1d\uccb4 \uc0dd\uc131\uc2dc \ucd5c\uc18c \ud06c\uae30\ub294 16\ubc14\uc774\ud2b8\ub2e4.<\/li><li>\uae30\ubcf8 \uc790\ub8cc\ud615 int\ub294 4\ubc14\uc774\ud2b8\uc9c0\ub9cc Integer\ub294 16\ubc14\uc774\ud2b8\uc774\uba70, \ucd94\uac00\ub85c \uc774\uc5d0 \ub300\ud55c \ub808\ud37c\ub7f0\uc2a4\ub85c \uc778\ud574 8\ubc14\uc774\ud2b8\uac00 \ub354 \ud544\uc694\ud558\ub2e4. <\/li><li>JVM\uac1d\uccb4\uc758 \uad6c\uccb4\uc801\uc778 \ud544\ub4dc \ud06c\uae30\ub97c \ud655\uc778\ud558\ub824\uba74, <a href=\"https:\/\/github.com\/openjdk\/jol\">Java Object Layout<\/a>\uc744 \uc0ac\uc6a9\ud558\uba74 \ub41c\ub2e4.<\/li><li>\b\ucea1\uc290\ud654 \ub418\uc5b4 \uc788\ub294 \uc5b4\ub5a4 \uc694\uc18c\uc5d0 \uc811\uadfc\ud558\uae30 \uc704\ud574\uc120 \ud568\uc218 \ud638\ucd9c\uc774 \ud544\uc694\ud558\ub2e4. \uc774\uac83\uc740 \uc791\uc740 \ube44\uc6a9\uc774\uc9c0\ub9cc, \ud2f0\ud074 \ubaa8\uc544 \ud0dc\uc0b0\uc774\ub2e4.<\/li><li>\uc704\uc5d0\uc11c \uc5b8\uae09\ud558\uc600\ub4ef \uac1d\uccb4 \uc0dd\uc131\uc790\uccb4\uac00 \ube44\uc6a9\uc774\ubbc0\ub85c, \ubd88\ud544\uc694\ud55c \uac1d\uccb4 \uc0dd\uc131\uc740 \ud53c\ud558\ub3c4\ub85d \ud558\uc790<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\uac1d\uccb4 \uc120\uc5b8<\/h3>\n\n\n\n<p>\uc2f1\uae00\ud1a4 \ub610\ub294 \ub9c1\ud06c\ub4dc\ub9ac\uc2a4\ud2b8\ub97c \ud1b5\ud574 \uc0dd\uc131\ud55c \uac1d\uccb4\ub97c \uc7ac\uc0ac\uc6a9\ud558\uba74 \uac1d\uccb4 \uc0dd\uc131 \ube44\uc6a9\uc744 \uc904\uc77c \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uce90\uc2dc\ub97c \ud65c\uc6a9\ud558\ub294 \ud329\ud1a0\ub9ac \ud568\uc218<\/h3>\n\n\n\n<p>\ud329\ud1a0\ub9ac \ud568\uc218\ub294 \uce90\uc2dc\ub97c \uac00\uc9c8 \uc218 \uc788\ub2e4. \uadf8\ub798\uc11c \ud56d\uc0c1 \uac19\uc740 \uac1d\uccb4\ub97c \ubc18\ud658\ud558\uac8c \ub9cc\ub4e4 \uc218 \uc788\ub2e4. \uac1d\uccb4 \uc0dd\uc131\uc774 \ubb34\uac81\uac70\ub098 \ub3d9\uc2dc\uc5d0 \uc5ec\ub7ec mutable \uac1d\uccb4\ub97c \uc0ac\uc6a9\ud574\uc57c \ud558\ub294 \uacbd\uc6b0\uc5d0\ub294 \uac1d\uccb4 \ud480\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc88b\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ubb34\uac70\uc6b4 \uac1d\uccb4\ub97c \uc678\ubd80 \uc2a4\ucf54\ud504\ub85c \ubcf4\ub0b4\uae30<\/h3>\n\n\n\n<p>\ubb34\uac70\uc6b4 \uc5f0\uc0b0\uc740 \ubc14\uae65\ucabd\uc73c\ub85c \ube7c\uc11c \uc911\ubcf5\uc791\uc5c5\uc744 \ud558\uc9c0 \uc54a\uc544\uc57c \ud55c\ub2e4. \ub9ac\uc2a4\ud2b8\uc5d0 \ucd5c\ub300\uac12\uc774 \uba87\uac1c \ud3ec\ud568\ub418\ub294\uc9c0 \uacc4\uc0b0\ud558\ub294 \ud655\uc7a5\ud568\uc218\ub97c \ub9cc\ub4e4\uace0 \ube44\uad50\ud574\ubcf4\uc790.<\/p>\n\n\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\nimport java.util.ArrayList\nimport kotlin.system.measureTimeMillis\nfun main() {\n    val list:Iterable&lt;Int&gt; = Array(10000){ it }.toList()\n    println(&quot;time1 = ${measureTimeMillis {\n        println(&quot;result1 = ${list.countMax1()}&quot;)\n    }}&quot;)\n    println(&quot;time2 = ${measureTimeMillis {\n        println(&quot;result2 = ${list.countMax2()}&quot;)\n    }}&quot;)\n}\nfun Iterable&lt;Int&gt;.countMax1():Int{\n    val max = this.maxOrNull()\n    return count {it == max}\n}\nfun Iterable&lt;Int&gt;.countMax2():Int=count {it == this.maxOrNull()}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\uc9c0\uc5f0 \ucd08\uae30\ud654<\/h3>\n\n\n\n<p>\ubb34\uac70\uc6b4 \uac1d\uccb4\ub97c \uc0dd\uc131\ud560 \ub54c\ub294 lazy\ud0a4\uc6cc\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ucd08\uae30\ud654\ub97c \uc9c0\uc5f0\uc2dc\ud0a4\ub294 \uac83\uc774 \uc88b\ub2e4. \ud558\uc9c0\ub9cc \ud638\ucd9c\uc5d0 \ub300\ud55c \uc751\ub2f5 \uc2dc\uac04\uc774 \uae38\uc5b4 \uc9c8 \uc218 \uc788\uc73c\ubbc0\ub85c \ud56d\uc0c1 \uc9c0\uc5f0 \ucd08\uae30\ud654\uac00 \uc88b\uc740 \uac83\uc740 \uc544\ub2c8\ub2e4. \uc0c1\ud669\uc5d0 \ub9de\uac8c \uc0ac\uc6a9\ud558\uc790.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uae30\ubcf8 \uc790\ub8cc\ud615 \uc0ac\uc6a9\ud558\uae30<\/h3>\n\n\n\n<p>\uae30\ubcf8 \uc790\ub8cc\ud615\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \ud2b9\uc9d5\uc744 \uac16\ub294\ub2e4<\/p>\n\n\n\n<ul><li>\uac00\ubccd\ub2e4. \uc77c\ubc18\uc801\uc778 \uac1d\uccb4\uc640 \ub2e4\ub974\uac8c \ucd94\uac00\uc801\uc73c\ub85c \ud3ec\ud568\ub418\ub294 \uac83\uc774 \uc5c6\uc74c.<\/li><li>\ube60\ub974\ub2e4. \uac12\uc5d0 \uc811\uadfc\ud560 \ub54c \ucd94\uac00 \ube44\uc6a9\uc774 \ub4e4\uc9c0 \uc54a\ub294\ub2e4.<\/li><\/ul>\n\n\n\n<p>\uae30\ubcf8 \uc790\ub8cc\ud615\uc744 \uc0ac\uc6a9\ud558\ub294 \ucd5c\uc801\ud654\ub294 \ucf54\ud2c0\ub9b0\/JVM \ubc0f \ucf54\ud2c0\ub9b0\/Native \ubc84\uc804\uc5d0\uc11c\ub9cc \uc758\ubbf8\uac00 \uc788\ub2e4. \ub610\ud55c \uc22b\uc790\uc5d0 \ub300\ud55c \uc791\uc5c5\uc774 \uc5ec\ub7ec \ubc88 \ubc18\ubcf5 \ub420 \ub54c\ub9cc \uc758\ubbf8\uac00 \uc788\ub2e4. \ub530\ub77c\uc11c \uad49\uc7a5\ud788 \ud070 \uceec\ub809\uc158\uc744 \ucc98\ub9ac\ud560 \ub54c \ucc28\uc774\ub97c \ud655\uc778\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud568\uc218 \ud0c0\uc785 \ud30c\ub77c\ubbf8\ud130\ub97c \uac16\ub294 \ud568\uc218\uc5d0 inline \ud55c\uc815\uc790\ub97c \ubd99\uc774\uc790.<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-1024x312.png\" alt=\"\" class=\"wp-image-46009\" width=\"483\" height=\"146\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-1024x312.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-300x91.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-768x234.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot.png 1236w\" sizes=\"(max-width: 483px) 100vw, 483px\" \/><figcaption><em>\ucf54\ud2c0\ub9b0 \ud45c\uc900 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc5d0 \ud3ec\ud568\ub41c repeat \ud568\uc218<\/em><\/figcaption><\/figure>\n\n\n\n<p>inline \ud55c\uc815\uc790\uc758 \uc5ed\ud560\uc740 \ucef4\ud30c\uc77c \ud0c0\uc784\uc5d0 \ud568\uc218\ub97c \ud638\ucd9c\ud558\ub294 \ubd80\ubd84\uc744 \ud568\uc218\uc758 \ubcf8\ubb38\uc73c\ub85c \uc9d1\uc5b4 \ub123\ub294 \uac83\uc774\ub2e4. \uc608\ub97c\ub4e4\uc5b4 \ub2e4\uc74c\uacfc \uac19\uc774 repeat \ud568\uc218\ub97c \ud638\ucd9c\ud558\ub294 \ucf54\ub4dc\uac00 \uc788\ub2e4\uba74 \ucef4\ud30c\uc77c \ud0c0\uc784\uc5d0\ub294 for\ubb38\uc73c\ub85c \ub300\uccb4 \ub41c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-1.png\" alt=\"\" class=\"wp-image-46010\" width=\"233\" height=\"97\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-1.png 650w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-1-300x125.png 300w\" sizes=\"(max-width: 233px) 100vw, 233px\" \/><figcaption><em>\ucef4\ud30c\uc77c \uc804<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-2.png\" alt=\"\" class=\"wp-image-46011\" width=\"340\" height=\"170\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-2.png 956w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-2-300x150.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-2-768x384.png 768w\" sizes=\"(max-width: 340px) 100vw, 340px\" \/><figcaption><em>\ucef4\ud30c\uc77c \ub41c \ubc14\uc774\ud2b8\ucf54\ub4dc\ub97c \uc790\ubc14\ub85c \ub514\ucef4\ud30c\uc77c<\/em><\/figcaption><\/figure>\n\n\n\n<p>inline \ud55c\uc815\uc790\ub97c \uc0ac\uc6a9\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \uc7a5\uc810\uc744 \uac16\ub294\ub2e4.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. <strong>\ud0c0\uc785 \uc544\uaddc\uba3c\ud2b8\ub97c reified\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>fun &lt;T&gt; printTypeName() {\n    print(T::class.simpleName) \/\/ \ucef4\ud30c\uc77c \uc624\ub958\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>inline fun &lt;reified T&gt; printTypeName() {\n    print(T::class.simpleName)\n}\n\nprintTypeName&lt;Int&gt;() \/\/ Int\n<meta charset=\"utf-8\">printTypeName&lt;Char&gt;() \/\/ Char\n<meta charset=\"utf-8\">printTypeName&lt;String&gt;() \/\/ String<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">2. <strong>\ud568\uc218 \ud0c0\uc785 \ud30c\ub77c\ubbf8\ud130\ub97c \uac00\uc9c4 \ud568\uc218\uac00 \ud6e8\uc52c \ube60\ub974\uac8c \ub3d9\uc791\ud55c\ub2e4.<\/strong><\/h4>\n\n\n\n<p>\ubaa8\ub4e0 \ud568\uc218\ub294 <strong>inline \ud55c\uc815\uc790<\/strong>\ub97c \ubd99\uc774\uba74 \uc870\uae08 <strong>\ub354 \ube60\ub974\uac8c \ub3d9\uc791<\/strong>\ud55c\ub2e4. <strong>\ud568\uc218 \ud638\ucd9c\uacfc \ub9ac\ud134\uc744 \uc704\ud574 \uc810\ud504\ud558\ub294 \uacfc\uc815\uacfc \ubc31\uc2a4\ud0dd\uc744 \ucd94\uc801\ud558\ub294 \uacfc\uc815\uc774 \uc5c6\uae30 <\/strong>\ub54c\ubb38\uc774\ub2e4. \uadf8\ub807\uae30 \ub54c\ubb38\uc5d0 \ud45c\uc900 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc5d0 \uc788\ub294 \ub300\ubd80\ubd84\uc758 \ud568\uc218\uac00 inline\uc774 \ubd99\uc5b4\uc788\ub2e4.<\/p>\n\n\n\n<p><strong>\uc0ac\uc2e4 \ud568\uc218 \ud30c\ub77c\ubbf8\ud130\ub97c \uac00\uc9c0\uc9c0 \uc54a\ub294 \ud568\uc218\uc5d0\uc11c\ub294 \ud070 \uc131\ub2a5 \ucc28\uc774\uac00 \uc5c6\ub2e4.<\/strong><\/p>\n\n\n\n<p>\ud568\uc218\ub97c \uc778\uc790\ub85c \uac16\ub294 \uacbd\uc6b0 \ud568\uc218\ub294 \ub2e4\uc74c\uc758 \ud0c0\uc785\uc73c\ub85c \ucef4\ud30c\uc77c \ub41c\ub2e4.<\/p>\n\n\n\n<ul><li>()-&gt;Unit\uc740 Fuction0&lt;Unit&gt;\uc73c\ub85c \ucef4\ud30c\uc77c<\/li><li>(Int)-&gt;Int\ub294 Fuction1&lt;Int, Int&gt;\ub85c \ucef4\ud30c\uc77c<\/li><li>(Int, Int)-&gt;Int\ub294 Fuction2&lt;Int, Int, Int&gt; \ub85c \ucef4\ud30c\uc77c <\/li><\/ul>\n\n\n\n<p>\ub9e4\uac1c\ubcc0\uc218 \uac2f\uc218\uc5d0 \ub530\ub77c FuctionN\uc758 \ud0c0\uc785\uc73c\ub85c \ubcc0\uacbd\ub41c\ub2e4\uace0 \ubcfc \uc218 \uc788\ub2e4. \uc774\uc81c inline \ud568\uc218\uc640 inline \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc744 \ub54c \uc131\ub2a5\uc744 \ube44\uad50\ud574\ubcf4\uc790<\/p>\n\n\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\nimport kotlin.random.Random\nimport kotlin.system.measureTimeMillis\n\nfun main(){\n    val repeatCount = 100_000_000\n\tval elapsedTime1 = measureTimeMillis{\n        inlineRepeat(repeatCount){\n            doNothing()\n        }\n    }\n    \n    println(&quot;elapsedTime1 = $elapsedTime1&quot;)\n    \n    val elapsedTime2 = measureTimeMillis{\n        noinlineRepeat(repeatCount){\n            doNothing()\n        }\n    }\n    \n    println(&quot;elapsedTime2 = $elapsedTime2&quot;)\n    \n}\n\nfun doNothing(){\n    Random.nextInt()\n}\n\ninline fun inlineRepeat(times:Int, action:(Int) -&gt; Unit){\n    for(index in 0 until times){\n        action(index)\n    }\n}\n\nfun noinlineRepeat(times:Int, action:(Int) -&gt; Unit){\n    for(index in 0 until times){\n        action(index)\n    }\n}\n<\/pre>\n\n\n\n<p>inlineRepeat\ud568\uc218\ub294 main \ud568\uc218\ub0b4\ub85c \uc0bd\uc785\ub418\uc5b4 action\uc778 doNothing\uc744 \uc9c1\uc811\uc801\uc73c\ub85c \ud638\ucd9c\ud558\uc9c0\ub9cc, <\/p>\n\n\n\n<p>noinlineRepeat\ud568\uc218\ub294 action\uc778\uc790 \ud0c0\uc785\uc774 Fuction1&lt;Int, Unit&gt;\uc73c\ub85c \ucef4\ud30c\uc77c \ub418\uc5b4 action.invoke(index) \ud615\ud0dc\ub85c \ud638\ucd9c\ud55c\ub2e4. \uc774\ub7ec\ud55c \ubd80\ubd84 \ub54c\ubb38\uc5d0 \uc778\ub77c\uc778\ud568\uc218\ubcf4\ub2e4 \ube44\uc6a9\uc774 \ub354 \ub4e0\ub2e4.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3. <strong>\ube44\uc9c0\uc5ed(non-local) \ub9ac\ud134\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-3.png\" alt=\"\" class=\"wp-image-46014\" width=\"323\" height=\"363\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-3.png 818w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-3-267x300.png 267w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2022\/03\/www.charlezz.com-screenshot-3-768x864.png 768w\" sizes=\"(max-width: 323px) 100vw, 323px\" \/><\/figure>\n\n\n\n<p>\uc704 \uc608\uc81c\ucf54\ub4dc\uc5d0\uc11c \uc120\uc5b8\ud55c noinlineRepeat\ub294 \ub0b4\ubd80\uc5d0\uc11c \ub9ac\ud134\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc5c6\ub2e4.<\/p>\n\n\n\n<p>\uc774\ub294 \ud568\uc218\uac00 \uac1d\uccb4\ub85c \ub798\ud551\ub418\uc5b4\uc11c \ubc1c\uc0dd\ud558\ub294 \ubb38\uc81c\ub85c, \ud568\uc218\uac00 \ub2e4\ub978 \ud074\ub798\uc2a4\uc5d0 \uc704\uce58(non-local)\ud558\ubbc0\ub85c return\uc744 \uc0ac\uc6a9\ud574\uc11c main\uc73c\ub85c \ub3cc\uc544\uc62c \uc218\uac00 \uc5c6\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p>\uc778\ub77c\uc778 \ud568\uc218\ub294 main \ud568\uc218\ub0b4\uc5d0 \ud3ec\ud568\ub418\ubbc0\ub85c return\uc744 \ud3ec\ud568\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">inline \ud55c\uc815\uc790\uc758 \ud55c\uacc4\uc640 \ube44\uc6a9<\/h3>\n\n\n\n<ul><li>public \uc778\ub77c\uc778 \ud568\uc218 \ub0b4\ubd80\uc5d0\uc11c private\uacfc internal \uac00\uc2dc\uc131\uc744 \uac00\uc9c4 \ud568\uc218 \ubc0f \ud504\ub85c\ud37c\ud2f0\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc5c6\ub2e4.<\/li><li>\uc778\ub77c\uc778 \ud55c\uc815\uc790\ub97c \ub0a8\uc6a9\ud558\uba74 \ucf54\ub4dc\uc758 \ud06c\uae30\uac00 \uae30\ud558 \uae09\uc218\uc801\uc73c\ub85c \ucee4\uc9c8 \uc218 \uc788\ub2e4.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">crossinline\uacfc noinline<\/h3>\n\n\n\n<p>crossinline: \uc778\ub77c\uc778 \ud568\uc218\ub97c \ub9e4\uac1c\ubcc0\uc218\ub85c \ubc1b\uc558\uc9c0\ub9cc, \ube44-\uc9c0\uc5ed\uc801(non-local) \ubc18\ud658\uc740 \ubd88\uac00\ud558\ub2e4. \uc778\ub77c\uc778\uc73c\ub85c \ub9cc\ub4e4\uc9c0 \uc54a\uc740 \ub2e4\ub978 \ub78c\ub2e4 \ud45c\ud604\uc2dd\uacfc \uc870\ud569\ud574\uc11c \uc0ac\uc6a9\ud560 \ub54c \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud558\ub294 \uacbd\uc6b0 \ud65c\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p>noinline: \uc778\uc790\ub85c \uc778\ub77c\uc778 \ud568\uc218\ub97c \ubc1b\uc744 \uc218 \uc5c6\uac8c \ub9cc\ub4e0\ub2e4. \uc778\ub77c\uc778 \ud568\uc218\uac00 \uc544\ub2cc \ud568\uc218\ub97c \uc778\uc790\ub85c \uc0ac\uc6a9\ud558\uace0 \uc2f6\uc744 \ub54c \ud65c\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc778\ub77c\uc778 \ud074\ub798\uc2a4\uc758 \uc0ac\uc6a9\uc744 \uace0\ub824\ud558\uc790<\/h2>\n\n\n\n<p>\ub54c\ub54c\ub85c \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc744 \uc704\ud55c \ub798\ud37c\ud074\ub798\uc2a4 \uc0dd\uc131\uc774 \ud544\uc694\ud558\ub2e4. \uadf8\ub7ec\ub098 \ucd94\uac00 \ud799 \ud560\ub2f9\uc73c\ub85c \uc778\ud574 \ub7f0\ud0c0\uc784 \uc624\ubc84\ud5e4\ub4dc\uac00 \ubc1c\uc0dd\ud558\uace0, \ub798\ud551\ub41c \ud0c0\uc785\uc774  \uc6d0\uc2dc \ud0c0\uc785\uc778 \uacbd\uc6b0 \uc131\ub2a5\uc774 \ud06c\uac8c \uc800\ud558\ub41c\ub2e4.<\/p>\n\n\n\n<p>\uc774\ub7ec\ud55c \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574 \ucf54\ud2c0\ub9b0\uc5d0\uc11c\ub294 \ud2b9\ubcc4\ud55c \uc885\ub958\uc758 \ud074\ub798\uc2a4\ub97c \uc81c\uacf5\ud55c\ub2e4. \ubc14\ub85c \uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub2e4. \uc778\ub77c\uc778\ud074\ub798\uc2a4\ub294 \uac12 \uae30\ubc18 \ud074\ub798\uc2a4\ub4e4\uc758 \ubd80\ubd84\uc9d1\ud569\uc73c\ub85c \ub3c5\uc790\uc131(identity)\uc744 \uac16\uc9c0 \ubabb\ud558\uace0, \uac12\ub9cc \uac16\uac8c \ub41c\ub2e4. <\/p>\n\n\n\n<p>\uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub97c \uc120\uc5b8\ud558\ub294 \ubc29\ubc95\uc740 \ud074\ub798\uc2a4\uc5d0 value \ud0a4\uc6cc\ub4dc\ub97c \ubd99\uc774\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><meta charset=\"utf-8\">\b<strong>value<\/strong> class Name(private val value:String)<\/code><\/pre>\n\n\n\n<p>\bJVM \ubc31\uc5d4\ub4dc\uc5d0 \ub300\ud55c \uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub97c \uc120\uc5b8\ud558\ub824\uba74 \ud074\ub798\uc2a4\uc5d0 @JvmInline \uc560\ub178\ud14c\uc774\uc158\uc744 \ubd99\uc5ec\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><meta charset=\"utf-8\"><strong>@JvmInline\n<\/strong>\bvalue class Name(private val value:String)<\/code><\/pre>\n\n\n\n<p>\uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub294 \uc8fc \uc0dd\uc131\uc790\uc5d0\uc11c \ubc18\ub4dc\uc2dc \ub2e8 \ud558\ub098\uc758 \ud504\ub85c\ud37c\ud2f0\ub97c \uac16\ub294\ub2e4. \ub7f0\ud0c0\uc784\uc5d0 \uc778\ub77c\uc778 \ud074\ub798\uc2a4\uc758 \uc778\uc2a4\ud134\uc2a4\ub4e4\uc740 \uc778\ub77c\uc778 \ud074\ub798\uc2a4\uc758 \uac1d\uccb4\uac00 \uc544\ub2cc <strong>\ub2e8\uc77c \ud504\ub85c\ud37c\ud2f0\ub85c \uc0ac\uc6a9<\/strong>\ub41c\ub2e4. <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \uc791\uc131\ud55c \ucf54\ub4dc\nval name: Name = Name(\"Charles\")\n\n\/\/ \ucef4\ud30c\uc77c \ud0c0\uc784\uc5d0 \ubc14\ub00c\ub294 \ucf54\ub4dc\nval name: String = \"Charles\"<\/code><\/pre>\n\n\n\n<p>\ub2e4\uc74c\uacfc \uac19\uc740 \uc0c1\ud669\uc5d0\uc11c \uc778\ub77c\uc778 \ud074\ub798\uc2a4\uac00 \uc0ac\uc6a9\ub41c\ub2e4.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. \uce21\uc815 \ub2e8\uc704\ub97c \ud45c\ud604\ud560 \ub54c<\/h4>\n\n\n\n<p>\ud754\ud788 \ucd08(seconds)\uc640 \ubc00\ub9ac\ucd08(milliseconds)\ub97c \uad6c\ubd84\ud558\uae30 \uc704\ud574 \ubcc0\uc218 \ub610\ub294 \ud568\uc218 \uc778\uc790\uc5d0 ms \ub610\ub294 ~millis\uc640 \uac19\uc740 \uc774\ub984\uc744 \ubd99\uc774\uace4 \ud55c\ub2e4. \ud558\uc9c0\ub9cc \ub354 \uc88b\uc740 \ud574\uacb0 \ubc29\ubc95\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \ud0c0\uc785\uc5d0 \uc81c\ud55c\uc744 \uac70\ub294 \uac83\uc774\ub2e4. <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@JvmInline\nvalue class Minutes(val min: Int) {\n    fun toMillis(): Millis = Millis(min * 60 * 1000)\n}\n\n@JvmInline\nvalue class Millis(val ms: Int) {\n\n}\n\ninterface Timer {\n    fun callAfter(ms: <strong>Millis<\/strong>, callback: () -&gt; Unit)\n}\n\nfun setTimer(<strong>min: Minutes<\/strong>, timer: Timer) {\n    timer.callAfter(<strong>min.toMillis()<\/strong>) {\n        println(\"Wake Up!\")\n    }\n}<\/code><\/pre>\n\n\n\n<p>\uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c px, dp \ub4f1\uc758 \ub2e4\uc591\ud55c \ub2e8\uc704\ub97c \uc81c\ud55c\ud560 \ub54c \ud65c\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. \ud0c0\uc785 \uc624\uc6a9\uc73c\ub85c \ubc1c\uc0dd\ud558\ub294 \ubb38\uc81c\ub97c \ub9c9\uc744 \ub54c<\/h4>\n\n\n\n<p>Room\uc744 \uc0ac\uc6a9\ud560 \ub54c \ub2e4\uc74c\uacfc \uac19\uc774 \ub3d9\uc77c\ud55c \ud0c0\uc785\uc758 \uceec\ub7fc\uc744 \ud14c\uc774\ube14\uc744 \ub2e4\ub8e8\ub294 \uacbd\uc6b0 \uc2e4\uc218\ub85c \uc798\ubabb\ub41c \uac12\uc744 \ub123\uc744 \uc218\ub3c4 \uc788\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Entity(tableName = \"grades\")\nclass Grades(\n    @ColumnInfo(name = \"studentId\")\n    val studentId: Int,\n<meta charset=\"utf-8\">\n    @ColumnInfo(name = \"teachertId\")\n<meta charset=\"utf-8\">    val teacherId: Int,\n<meta charset=\"utf-8\">\n    @ColumnInfo(name = \"schoolId\")\n<meta charset=\"utf-8\">    val schoolId: Int,\n    ...\n)<\/code><\/pre>\n\n\n\n<p>\uc774\ub7ec\ud55c \ubb38\uc81c\ub97c \ubbf8\ub9ac \ub9c9\uc73c\ub824\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 Int \uc790\ub8cc\ud615\uc744 \uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub85c \ub798\ud551\ud558\uba74 \ub41c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><meta charset=\"utf-8\">@JvmInline\nvalue class StudentId(val id:Int)\n\n<meta charset=\"utf-8\">@JvmInline\nvalue class TeacherId(val id:Int)\n\n<meta charset=\"utf-8\">@JvmInline\nvalue class SchoolId(val id:Int)\n\n@Entity(tableName = \"grades\")\nclass Grades(\n    @ColumnInfo(name = \"studentId\")\n    val studentId: <meta charset=\"utf-8\">StudentId,\n<meta charset=\"utf-8\">\n    @ColumnInfo(name = \"teachertId\")\n<meta charset=\"utf-8\">    val teacherId: <meta charset=\"utf-8\">TeacherId,\n<meta charset=\"utf-8\">\n    @ColumnInfo(name = \"schoolId\")\n<meta charset=\"utf-8\">    val schoolId: <meta charset=\"utf-8\">SchoolId,\n    ...\n)<\/code><\/pre>\n\n\n\n<p>\uc774\ub807\uac8c \ud558\uba74 \uc548\uc804\ud574\uc9c0\uba70, \ucef4\ud30c\uc77c \ud0c0\uc784\uc5d0\ub3c4 \ud0c0\uc785\uc774 Int\ub85c \ub300\uccb4\ub418\ubbc0\ub85c \ubb38\uc81c\uc5c6\uc774 \ub3d9\uc791\ud558\uac8c \ub41c\ub2e4.<\/p>\n\n\n\n<p>\uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub97c \uc0ac\uc6a9\ud558\uba74 \uc548\uc804\uc744 \uc704\ud574 \uc0c8\ub85c\uc6b4 \ud0c0\uc785\uc744 \ub3c4\uc785\ud574\ub3c4, \uc624\ubc84\ud5e4\ub4dc\ub294 \ubc1c\uc0dd\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc778\ub77c\uc778 \ud074\ub798\uc2a4\uc640 typealias<\/h3>\n\n\n\n<p>\uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub294 typealias\uc640 \ub9e4\uc6b0 \uc720\uc0ac\ud574 \ubcf4\uc778\ub2e4. \uadf8\ub7ec\ub098 \uc911\uc694\ud55c \ucc28\uc774\uc810\uc740 typealias\ub294 \uadfc\ubcf8\uc801\uc778 \ud0c0\uc785(underlying type)\uacfc \ud638\ud658\uc774 \ub418\uc9c0\ub9cc \uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub294 \uadf8\ub807\uc9c0 \uc54a\ub2e4\ub294 \uc810\uc774\ub2e4. \ub2e4\uc74c \uc608\uc81c \ucf54\ub4dc\ub97c \ud1b5\ud574 \ud1b5\ucc30\uc744 \uc5bb\uc790.<\/p>\n\n\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\ntypealias NameTypeAlias = String\n\n@JvmInline\nvalue class NameInlineClass(val s: String)\n\nfun acceptString(s: String) {}\nfun acceptNameTypeAlias(n: NameTypeAlias) {}\nfun acceptNameInlineClass(p: NameInlineClass) {}\n\nfun main() {\n    val nameAlias: NameTypeAlias = &quot;&quot;\n    val nameInlineClass: NameInlineClass = NameInlineClass(&quot;&quot;)\n    val string: String = &quot;&quot;\n\n    acceptString(nameAlias) \/\/ OK: \uc6d0\ub798 \ud0c0\uc785\ub300\uc2e0 typealias\ub97c \uc804\ub2ec \ud560 \uc218 \uc788\ub2e4.\n    acceptString(nameInlineClass) \/\/ Not OK: \uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub294 \uc6d0\ub798 \ud0c0\uc785\uc744 \uc804\ub2ec \ud558\uc9c0 \ubabb\ud55c\ub2e4.\n\n    \/\/ \ubc18\ub300\ub85c \ubc14\uafd4\uc11c \ud55c\ubc88 \ubcf4\ub3c4\ub85d \ud558\uc790\n    acceptNameTypeAlias(string) \/\/ OK: \uc6d0\ub798 \ud0c0\uc785\ub300\uc2e0 typealias\ub97c \uc804\ub2ec \ud560 \uc218 \uc788\ub2e4.\n    acceptNameInlineClass(string) \/\/ Not OK: \uc778\ub77c\uc778 \ud074\ub798\uc2a4\ub294 \uc6d0\ub798 \ud0c0\uc785\uc744 \uc804\ub2ec \ud558\uc9c0 \ubabb\ud55c\ub2e4.\n}\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\ub354 \uc774\uc0c1 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 \uac1d\uccb4\uc758 \ub808\ud37c\ub7f0\uc2a4\ub97c \uc81c\uac70\ud558\uc790<\/h2>\n\n\n\n<p>\uc790\ubc14\ub098 \ucf54\ud2c0\ub9b0 \ucc98\ub7fc \uba54\ubaa8\ub9ac \uad00\ub9ac\ub97c \uc790\ub3d9\uc73c\ub85c \ud574\uc8fc\ub294\ub370 \uc775\uc219\ud55c \uac1c\ubc1c\uc790\ub294 \uac1d\uccb4 \ud574\uc81c(free)\ub97c \uace0\ub824\ud558\uc9c0 \uc54a\ub294\ub2e4. \uac00\ube44\uc9c0 \ucf5c\ub809\ud130(GC:Garbege Collector) \ub300\uc2e0 \uc54c\uc544\uc11c \ud574\uc8fc\uae30 \ub54c\ubb38\uc774\ub2e4. \uadf8\ub807\ub2e4\uace0 \uba54\ubaa8\ub9ac \uad00\ub9ac\uc5d0 \uc2e0\uacbd\uc744 \uc804\ud600 \uc548\uc4f0\uba74 OOM(Out Of Memory) \uc5d0\ub7ec\uc5d0 \uc9c1\uba74\ud558\uae30\ub3c4 \ud55c\ub2e4.<\/p>\n\n\n\n<p>\uac00\uc7a5 \uae30\uc5b5\ud558\uae30 \uc26c\uc6b4 \uc6d0\uce59\uc740 &#8216;<strong>\ubd88\ud544\uc694\ud55c \uac1d\uccb4\uc758 \ub808\ud37c\ub7f0\uc2a4\ub294 \uc720\uc9c0\ud558\uc9c0 \uc54a\ub294\ub2e4<\/strong>&#8216; \uc774\ub2e4. \uc774\ub97c \uae30\uc5b5\ud558\uace0 \ub2e4\uc74c\uc758 \ub0b4\uc6a9\uc744 \uc720\uc758\ud558\uc790.<\/p>\n\n\n\n<ul><li>\ud754\ud788 \uc790\ubc14\uc758 static \ud0a4\uc6cc\ub4dc \ub610\ub294 \ucf54\ud2c0\ub9b0\uc758 companion \uc73c\ub85c \uc720\uc9c0\ud574 \ubc84\ub9ac\uba74 \ud574\ub2f9 \uac1d\uccb4\uc5d0 \ub300\ud55c \uba54\ubaa8\ub9ac\uac00 \uc815\uc801\uc73c\ub85c \uace0\uc815\ub418\uae30 \ub54c\ubb38\uc5d0 \uba54\ubaa8\ub9ac\ub97c \ud574\uc81c \ud560 \uc218 \uc5c6\ub2e4. <\/li><li>\uc11c\ub85c \ub2e4\ub978 \uc2a4\ucf54\ud504 \ub610\ub294 \uc0dd\uba85\uc8fc\uae30\ub97c \uac16\ub294 \uac1d\uccb4\ub97c \ub808\ud37c\ub7f0\uc2f1 \ud558\uc9c0 \uc54a\ub3c4\ub85d \uc720\uc758\ud558\uc790. \uc608\ub97c \ub4e4\uc5b4 ViewModel\uc5d0\uc11c Activity\ub97c \ub808\ud37c\ub7f0\uc2f1 GC \ub418\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc5d0 \uba54\ubaa8\ub9ac \ub204\uc218\uac00 \ubc1c\uc0dd\ud55c\ub2e4.<\/li><li>\uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 \uac1d\uccb4\ub294 null\ub85c \uc124\uc815\ud558\uc790. GC \ub300\uc0c1\uc73c\ub85c \ub9cc\ub4dc\ub294 \uac83\uc774\ub2e4.<\/li><li>SoftReference \ub610\ub294 WeakReference\ub97c \ud65c\uc6a9\ud558\uc790.<\/li><li>\ud799 \ud504\ub85c\ud30c\uc77c\ub7ec, <a href=\"https:\/\/www.charlezz.com\/?p=44748\">Leak Canary<\/a> \ub4f1 \ubcc4\ub3c4\uc758 \ub3c4\uad6c\ub97c \ud65c\uc6a9\ud558\uc790<\/li><li>\ud1b1\ub808\ubca8 \ud504\ub85c\ud37c\ud2f0 \ub610\ub294 \uac1d\uccb4 \uc120\uc5b8\uc73c\ub85c \ud070 \ub370\uc774\ud130\ub97c \uc800\uc7a5\ud558\uc9c0 \uc54a\ub3c4\ub85d \ud558\uc790.<\/li><li>\uc790\uc8fc \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc744 \ub370\uc774\ud130\ub97c \uce90\uc2dc\ud558\uc9c0 \ub9d0\uc790.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\uacfc\uac70\uc5d0\ub294 \uba54\ubaa8\ub9ac\uac00 \ube44\uc30c\uace0 \ud558\ub4dc\uc6e8\uc5b4\uc801\uc778 \uc81c\uc57d\uc774 \ucef8\uae30 \ub54c\ubb38\uc5d0 \ud6a8\uc728\uc131(efficiency) \ubc0f \ucd5c\uc801\ud654\uc5d0 \ub9ce\uc740 \ub178\ub825\uc744 \uae30\uc6b8\uc600\ub2e4. (1985\ub144\uc5d0 \ucd9c\uc2dc\ud55c \uac8c\uc784, \ub9c8\ub9ac\uc624 \ube0c\ub77c\ub354\uc2a4 \uc6a9\ub7c9\uc774 \uc57d 40kB\uc774\uc600\ub358 \uac83\uc5d0 \ub300\ud574 \uc0dd\uac01\ud574\ubcf4\uc790) \ud558\uc9c0\ub9cc \uc624\ub298\ub0a0\uc5d0\ub294 \uc0c1\ub300\uc801\uc73c\ub85c \b\ud558\ub4dc\uc6e8\uc5b4\ubcf4\ub2e4 \uac1c\ubc1c\uc790\uc758 \ubab8\uac12\uc774 \ube44\uc2f8\uae30 \ub54c\ubb38\uc5d0 \uacfc\uac70\ubcf4\ub2e4\ub294 \ud6a8\uc728\uc131\uc5d0 \ub300\ud574 \uc0c1\ub300\uc801\uc73c\ub85c \uad00\ub300\ud558\uac8c \ubc14\ub77c\ubcf8\ub2e4.\ud558\uc9c0\ub9cc \uc5ec\ub7ec\uac00\uc9c0 \uce21\uba74\uc5d0\uc11c \ucd5c\uc801\ud654\ub294 \uc5ec\uc804\ud788 \uc911\uc694\ud558\ub2e4. \uc870\uae08\ub9cc \ucd5c\uc801\ud654\uc5d0 \uc2e0\uacbd\uc744 \uc368\ub3c4 \uc0ac\uc6a9\uc790 \ubc0f \uae30\uc5c5\uc774 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[5],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45973"}],"collection":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=45973"}],"version-history":[{"count":39,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45973\/revisions"}],"predecessor-version":[{"id":46022,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45973\/revisions\/46022"}],"wp:attachment":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=45973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=45973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=45973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}