\ud504\ub85c\uadf8\ub7a8\uc744 \uad6c\uc870\uc801\uc774\uace0 \ud6a8\uc728\uc801\uc73c\ub85c \uc791\uc131\ud558\ub294 \ub370 \uc911\uc694\ud55c \uac1c\ub150 \uc911 \ud558\ub098\ub294 \uac1d\uccb4\uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d(Object-Oriented Programming, OOP)<\/strong>\uc785\ub2c8\ub2e4. Dart \uc5b8\uc5b4\ub294 \uc774\ub7ec\ud55c OOP \uac1c\ub150\uc744 \ubc14\ud0d5\uc73c\ub85c \uc124\uacc4\ub41c \uc5b8\uc5b4\ub85c, \ucf54\ub4dc\ub97c \uc7ac\uc0ac\uc6a9\ud558\uace0 \uc720\uc9c0\ubcf4\uc218\ud558\uae30 \uc27d\uac8c \ub9cc\ub4e4\uc5b4 \uc90d\ub2c8\ub2e4. OOP\uc758 \uc911\uc694\ud55c \uad6c\uc131 \uc694\uc18c\uc778 \ucd94\uc0c1 \ud074\ub798\uc2a4\uc640 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n \uac1d\uccb4\uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d\uc740 \ud504\ub85c\uadf8\ub7a8\uc744 ‘\uac1d\uccb4’\ub77c\ub294 \ub3c5\ub9bd\uc801\uc778 \ub2e8\uc704\ub85c \uad6c\uc131\ud558\uc5ec \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. \uac1d\uccb4\ub294 \uc0c1\ud0dc(\uc18d\uc131)\uc640 \ub3d9\uc791(\uba54\uc11c\ub4dc)\uc744 \ud3ec\ud568\ud558\uc5ec \ud504\ub85c\uadf8\ub7a8\uc758 \ub85c\uc9c1\uc744 \ubaa8\ub4c8\ud654\ud560 \uc218 \uc788\uac8c \ud569\ub2c8\ub2e4. \uc8fc\uc694 OOP \uac1c\ub150\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n \ucd94\uc0c1 \ud074\ub798\uc2a4\ub294 \uc644\uc804\ud55c \uad6c\ud604\uc774 \uc544\ub2cc \uba54\uc11c\ub4dc\uc758 \uc815\uc758\ub97c \ud3ec\ud568\ud558\ub294 \ud074\ub798\uc2a4\uc785\ub2c8\ub2e4. \ucd94\uc0c1 \ud074\ub798\uc2a4\ub294 \ub2e4\ub978 \ud074\ub798\uc2a4\uc5d0 \uc0c1\uc18d\ubc1b\uc544 \uc0ac\uc6a9\ub418\uba70, \uc9c1\uc811 \uc778\uc2a4\ud134\uc2a4\ud654\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc774\ub294 \ud504\ub85c\uadf8\ub798\uba38\uc5d0\uac8c \uac15\ub825\ud55c \uc124\uacc4 \uacc4\uc57d\uc744 \uc81c\uacf5\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n \uc544\ub798\ub294 Dart\uc5d0\uc11c \ucd94\uc0c1 \ud074\ub798\uc2a4\ub97c \uc815\uc758\ud558\uace0 \uc0ac\uc6a9\ud558\ub294 \uc608\uc81c\uc785\ub2c8\ub2e4.<\/p>\n \uc704 \uc608\uc81c\uc5d0\uc11c <code>Animal<\/code> \ud074\ub798\uc2a4\ub294 \ucd94\uc0c1 \ud074\ub798\uc2a4\uc774\uba70, <code>sound()<\/code>\uc774\ub77c\ub294 \ucd94\uc0c1 \uba54\uc11c\ub4dc\ub97c \uc815\uc758\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. <code>Dog<\/code>\uc640 <code>Cat<\/code> \ud074\ub798\uc2a4\ub294 <code>Animal<\/code> \ud074\ub798\uc2a4\ub97c \uc0c1\uc18d\ubc1b\uc544 \uc774 \uba54\uc11c\ub4dc\ub97c \uad6c\ud604\ud569\ub2c8\ub2e4.<\/p>\n \ucd94\uc0c1 \ud074\ub798\uc2a4\ub294 \ud2b9\uc815 \ud074\ub798\uc2a4\uc758 \uacf5\ud1b5 \uae30\ub2a5\uc744 \uc815\uc758\ud558\uc5ec \ucf54\ub4dc\uc758 \uc911\ubcf5\uc744 \uc904\uc774\uace0, \uc720\uc9c0\ubcf4\uc218\ub97c \uc6a9\uc774\ud558\uac8c \ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud2b9\uc131 \ub355\ubd84\uc5d0 \ud655\uc7a5\uc131\uacfc \uc720\uc5f0\uc131\uc744 \ub192\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub2e4\uc591\ud55c \ub3d9\ubb3c \ud074\ub798\uc2a4\ub97c \uc815\uc758\ud560 \ub54c, \uac01 \ud074\ub798\uc2a4\uc758 \uacf5\ud1b5\ub41c \ud2b9\uc9d5\uc744 \ucd94\uc0c1 \ud074\ub798\uc2a4\uc5d0\uc11c \uc815\uc758\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \uc778\ud130\ud398\uc774\uc2a4\ub294 \ud074\ub798\uc2a4\uac00 \uad6c\ud604\ud574\uc57c \ud558\ub294 \uba54\uc11c\ub4dc\uc758 \uc9d1\ud569\uc744 \uc815\uc758\ud569\ub2c8\ub2e4. Dart\uc5d0\uc11c\ub294 \uc778\ud130\ud398\uc774\uc2a4\ub97c \ud074\ub798\uc2a4\ub85c \uc815\uc758\ud558\uace0, \uc774\ub97c \ub2e4\ub978 \ud074\ub798\uc2a4\uc5d0\uc11c \uad6c\ud604\ud568\uc73c\ub85c\uc368 \ub2e4\uc591\ud55c \uac1d\uccb4\uac00 \ub3d9\uc77c\ud55c \uba54\uc11c\ub4dc\ub97c \uc9c0\uc6d0\ud558\ub3c4\ub85d \uac15\uc81c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Dart\ub294 \ub9cc\uc57d \ud074\ub798\uc2a4\uac00 \ub2e4\ub978 \ud074\ub798\uc2a4\uc758 \uae30\ub2a5\uc744 \uc0c1\uc18d\ubc1b\uc9c0 \uc54a\ub294 \uacbd\uc6b0, \uadf8 \ud074\ub798\uc2a4\ub97c \uc778\ud130\ud398\uc774\uc2a4\ucc98\ub7fc \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \uc544\ub798\ub294 \uac04\ub2e8\ud55c \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud558\ub294 \uc608\uc81c\uc785\ub2c8\ub2e4.<\/p>\n \uc704 \uc608\uc81c\uc5d0\uc11c <code>Drawable<\/code> \uc778\ud130\ud398\uc774\uc2a4\ub294 <code>draw()<\/code> \uba54\uc11c\ub4dc\ub97c \uc815\uc758\ud569\ub2c8\ub2e4. <code>Circle<\/code>\uc640 <code>Square<\/code> \ud074\ub798\uc2a4\ub294 \uc774 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uad6c\ud604\ud558\uc5ec \uc790\uc2e0\uc758 \ubc29\uc2dd\uc73c\ub85c \uadf8\ub9ac\uae30 \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ub2e4\uc591\ud55c \ud615\ud0dc\uc758 \ub3c4\ud615\uc744 \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \uc720\uc5f0\uc131\uc744 \ud655\ubcf4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \ucd94\uc0c1 \ud074\ub798\uc2a4\uc640 \uc778\ud130\ud398\uc774\uc2a4\ub294 \uc720\uc0ac\ud55c \ubaa9\uc801\uc744 \uac00\uc9c0\uace0 \uc788\uc9c0\ub9cc, \ub2e4\uc74c\uacfc \uac19\uc740 \ucc28\uc774\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n \uac1d\uccb4\uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d\uc740 \ud604\ub300 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\uc5d0\uc11c \ud544\uc218\uc801\uc778 \ubd80\ubd84\uc774\uba70, Dart \uc5b8\uc5b4\ub294 \uc774\ub97c \uba85\ud655\ud558\uac8c \uc2e4\ud604\ud558\ub3c4\ub85d \uc124\uacc4\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \ucd94\uc0c1 \ud074\ub798\uc2a4<\/strong>\uc640 \uc778\ud130\ud398\uc774\uc2a4<\/strong>\ub294 \uc774\ub7ec\ud55c OOP \uac1c\ub150\uc744 \ub354\uc6b1 \ud6a8\uacfc\uc801\uc73c\ub85c \ud65c\uc6a9\ud560 \uc218 \uc788\ub294 \ub3c4\uad6c\uc785\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ucf54\ub4dc\uc758 \uc720\uc5f0\uc131\uacfc \uc7ac\uc0ac\uc6a9\uc131\uc744 \ub192\uc774\uace0, \ud504\ub85c\uc81d\ud2b8\uc758 \ubcf5\uc7a1\uc131\uc744 \uad00\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Dart\ub97c \uc0ac\uc6a9\ud558\ub294 \uac1c\ubc1c\uc790\ub77c\uba74 \uc774\ub7ec\ud55c \uac1c\ub150\uc744 \uc798 \uc774\ud574\ud558\uace0 \ud65c\uc6a9\ud568\uc73c\ub85c\uc368 \ub354 \ub098\uc740 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\uc744 \ud560 \uc218 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n <\/body><\/p>\n","protected":false},"excerpt":{"rendered":"1. \uac1d\uccb4\uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d(OOP) \uac1c\ub150<\/h2>\n
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2. \ucd94\uc0c1 \ud074\ub798\uc2a4(Abstract Class)<\/h2>\n
\ub2e8\uc21c\ud55c \ucd94\uc0c1 \ud074\ub798\uc2a4 \uc608\uc81c<\/h3>\n
abstract class Animal {\n void sound(); \/\/ \ucd94\uc0c1 \uba54\uc11c\ub4dc\n}\n\nclass Dog extends Animal {\n @override\n void sound() {\n print(\"\uba4d\uba4d!\");\n }\n}\n\nclass Cat extends Animal {\n @override\n void sound() {\n print(\"\uc57c\uc639!\");\n }\n}\n\nvoid main() {\n Animal dog = Dog();\n Animal cat = Cat();\n \n dog.sound(); \/\/ \uba4d\uba4d!\n cat.sound(); \/\/ \uc57c\uc639!\n}\n<\/code><\/pre>\n\ucd94\uc0c1 \ud074\ub798\uc2a4\uc758 \ud65c\uc6a9<\/h3>\n
3. \uc778\ud130\ud398\uc774\uc2a4(Interfaces)<\/h2>\n
\uc778\ud130\ud398\uc774\uc2a4 \uc608\uc81c<\/h3>\n
class Drawable {\n void draw();\n}\n\nclass Circle implements Drawable {\n @override\n void draw() {\n print(\"Circle\uc744 \uadf8\ub9bd\ub2c8\ub2e4.\");\n }\n}\n\nclass Square implements Drawable {\n @override\n void draw() {\n print(\"Square\uc744 \uadf8\ub9bd\ub2c8\ub2e4.\");\n }\n}\n\nvoid main() {\n Drawable circle = Circle();\n Drawable square = Square();\n \n circle.draw(); \/\/ Circle\uc744 \uadf8\ub9bd\ub2c8\ub2e4.\n square.draw(); \/\/ Square\uc744 \uadf8\ub9bd\ub2c8\ub2e4.\n}\n<\/code><\/pre>\n4. \ucd94\uc0c1 \ud074\ub798\uc2a4\uc640 \uc778\ud130\ud398\uc774\uc2a4\uc758 \ucc28\uc774<\/h2>\n
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5. \uacb0\ub860<\/h2>\n