\uc548\ub155\ud558\uc138\uc694! \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc790\ubc14\ub97c \ud65c\uc6a9\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc758 \uc5ec\ub7ec \uac00\uc9c0 \uc8fc\uc81c\ub97c \ub2e4\ub8f0 \uac83\uc785\ub2c8\ub2e4. \ud2b9\ud788, \uc790\ubc14\uc758 \ub78c\ub2e4 \ud568\uc218\uc640 \uace0\ucc28 \ud568\uc218\uc5d0 \ub300\ud574 \uae4a\uc774 \uc788\uac8c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \ub78c\ub2e4 \ud568\uc218\ub294 \uc790\ubc14 8\uc5d0\uc11c \ub3c4\uc785\ub41c \uae30\ub2a5\uc73c\ub85c, \ucf54\ub4dc\uc758 \uac04\uacb0\uc131\uacfc \uac00\ub3c5\uc131\uc744 \ub192\uc5ec\uc8fc\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \ub610\ud55c, \uace0\ucc28 \ud568\uc218\ub294 \ub2e4\ub978 \ud568\uc218\ub97c \uc778\uc790\ub85c \ubc1b\uac70\ub098 \ud568\uc218\ub97c \ubc18\ud658\ud560 \uc218 \uc788\ub294 \ud568\uc218\ub97c \uc758\ubbf8\ud558\uba70, \ud568\uc218\ud615 \ud504\ub85c\uadf8\ub798\ubc0d\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4.<\/p>\n
1. \uc790\ubc14\uc758 \uae30\ucd08<\/h2>\n
\uc790\ubc14\ub294 \uac1d\uccb4 \uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub85c, \ub2e4\uc591\ud55c \ud50c\ub7ab\ud3fc\uc5d0\uc11c \uc2e4\ud589\ub420 \uc218 \uc788\ub294 \uc774\uc2dd\uc131\uc774 \ub6f0\uc5b4\ub09c \ud2b9\uc131\uc744 \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc740 \uc790\ubc14\ub97c \uae30\ubc18\uc73c\ub85c \ud558\uae30 \ub54c\ubb38\uc5d0, \uc790\ubc14\uc758 \uae30\ucd08\uc5d0 \ub300\ud55c \uc774\ud574\uac00 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n
\uc790\ubc14\uc758 \uae30\ubcf8 \ubb38\ubc95, \ud074\ub798\uc2a4\uc640 \uac1d\uccb4, \uc0c1\uc18d, \ub2e4\ud615\uc131 \ub4f1 \uac1d\uccb4 \uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uc8fc\uc694 \uac1c\ub150\ub4e4\uc744 \uc775\ud78c \ud6c4\uc5d0 \uc548\ub4dc\ub85c\uc774\ub4dc \uac1c\ubc1c\ub85c \ub118\uc5b4\uac00\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n
2. \uc790\ubc14\uc758 \ub78c\ub2e4 \ud568\uc218<\/h2>\n
\ub78c\ub2e4 \ud568\uc218\ub294 \uc775\uba85 \ud568\uc218(anonymous function)\ub77c\uace0\ub3c4 \ubd80\ub974\uba70, \ud568\uc218\uc758 \ub0b4\uc6a9\uc744 \uc778\ub77c\uc778(inline)\uc73c\ub85c \uc791\uc131\ud560 \uc218 \uc788\uac8c \ud574\uc90d\ub2c8\ub2e4. \ub78c\ub2e4 \ud568\uc218\ub294 \ucf54\ub4dc\uc758 \uac00\ub3c5\uc131\uc744 \ub192\uc774\uace0 \ucf54\ub4dc\uc758 \uc591\uc744 \uc904\uc5ec\uc8fc\ubbc0\ub85c, \ud2b9\ud788 \ucf5c\ubc31\uc774\ub098 \uc774\ubca4\ud2b8 \ub9ac\uc2a4\ub108\ub97c \uc791\uc131\ud560 \ub54c \uc790\uc8fc \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n
2.1. \ub78c\ub2e4 \ud568\uc218\uc758 \ubb38\ubc95<\/h3>\n\n (\uc778\uc7901, \uc778\uc7902) -> { \uc2e4\ud589\ud560 \ucf54\ub4dc }\n <\/code><\/pre>\n\uac04\ub2e8\ud55c \uc608\uc81c\ub97c \ud1b5\ud574 \uc774\ud574\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc544\ub798 \ucf54\ub4dc\ub294 \ub450 \uc218\ub97c \ub354\ud558\ub294 \ub78c\ub2e4 \ud568\uc218\ub97c \uc815\uc758\ud558\uace0 \uc0ac\uc6a9\ud558\ub294 \uc608\uc785\ub2c8\ub2e4.<\/p>\n
\n\/\/ \ub450 \uc218\ub97c \ub354\ud558\ub294 \ub78c\ub2e4 \ud568\uc218\nBiFunction sum = (a, b) -> a + b;\n\n\/\/ \uc0ac\uc6a9 \uc608\nint result = sum.apply(5, 10);\nSystem.out.println(result); \/\/ \ucd9c\ub825: 15\n <\/integer,><\/code><\/pre>\n3. \uc790\ubc14\uc758 \uace0\ucc28 \ud568\uc218<\/h2>\n
\uace0\ucc28 \ud568\uc218\ub294 \ud568\uc218\ub97c \uc778\uc790\ub85c \ubc1b\uac70\ub098 \ud568\uc218\ub97c \uacb0\uacfc\ub85c \ubc18\ud658\ud558\ub294 \ud568\uc218\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc790\ubc14\uc5d0\uc11c\ub294 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud558\uc5ec \uace0\ucc28 \ud568\uc218\ub97c \uad6c\ud604\ud569\ub2c8\ub2e4. \uace0\ucc28 \ud568\uc218\ub97c \ud1b5\ud574 \ucf54\ub4dc\ub97c \uc7ac\uc0ac\uc6a9\ud558\uace0, \ubaa8\ub4c8\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
3.1. \uace0\ucc28 \ud568\uc218\uc758 \uc608<\/h3>\n
\ub2e4\uc74c\uc740 \uace0\ucc28 \ud568\uc218\ub97c \uc608\ub85c \ub4dc\ub294 \ucf54\ub4dc\uc785\ub2c8\ub2e4. \uc544\ub798 \ucf54\ub4dc\ub294 \ub450 \uc815\uc218\ub97c \ubc1b\uc544\uc11c \ud2b9\uc815 \uc870\uac74\uc5d0 \ub530\ub77c \uc11c\ub85c \ub2e4\ub978 \ub3d9\uc791\uc744 \uc218\ud589\ud558\ub294 \ud568\uc218\uc785\ub2c8\ub2e4.<\/p>\n
\nimport java.util.function.BiConsumer;\n\npublic class HigherOrderFunctionExample {\n public static void main(String[] args) {\n \/\/ \uace0\ucc28 \ud568\uc218\ub85c \ub450 \uc218\ub97c \ube44\uad50\ud558\uc5ec \ucd9c\ub825\n compareAndAct(5, 10, (a, b) -> {\n if (a > b) {\n System.out.println(\"a\ub294 b\ubcf4\ub2e4 \ud07d\ub2c8\ub2e4.\");\n } else {\n System.out.println(\"a\ub294 b\ubcf4\ub2e4 \uc791\uac70\ub098 \uac19\uc2b5\ub2c8\ub2e4.\");\n }\n });\n }\n\n static void compareAndAct(int a, int b, BiConsumer action) {\n action.accept(a, b);\n }\n}\n <\/integer,><\/code><\/pre>\n4. \uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c\uc758 \ub78c\ub2e4\uc640 \uace0\ucc28 \ud568\uc218<\/h2>\n
\uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c\ub294 \uc790\uc8fc \uc0ac\uc6a9\ub418\ub294 \ucf5c\ubc31 \uc778\ud130\ud398\uc774\uc2a4\ub4e4\uc744 \ub78c\ub2e4 \ud45c\ud604\uc2dd\uacfc \ud568\uaed8 \ud65c\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, Button \ud074\ub9ad \uc774\ubca4\ud2b8\ub97c \ucc98\ub9ac\ud558\ub294 \uacbd\uc6b0, \uc544\ub798\uc640 \uac19\uc774 \ub78c\ub2e4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\nButton myButton = findViewById(R.id.my_button);\nmyButton.setOnClickListener(v -> {\n \/\/ \ubc84\ud2bc \ud074\ub9ad \uc2dc \ub3d9\uc791\n Toast.makeText(this, \"\ubc84\ud2bc\uc774 \ud074\ub9ad\ub418\uc5c8\uc2b5\ub2c8\ub2e4.\", Toast.LENGTH_SHORT).show();\n});\n <\/code><\/pre>\n5. \ub78c\ub2e4 \ud568\uc218\uc640 \uace0\ucc28 \ud568\uc218\uc758 \uc7a5\uc810<\/h2>\n\n- \uac00\ub3c5\uc131 \ud5a5\uc0c1:<\/strong> \ud568\uc218\uc758 \ub0b4\uc6a9\uc744 \uac04\ub7b5\ud558\uac8c \ud45c\ud604\ud560 \uc218 \uc788\uc5b4 \ucf54\ub4dc\ub97c \uc774\ud574\ud558\uae30 \uc26c\uc6cc\uc9d1\ub2c8\ub2e4.<\/li>\n
- \ucf54\ub4dc \uc7ac\uc0ac\uc6a9\uc131:<\/strong> \uace0\ucc28 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \ucf54\ub4dc\ub97c \uc7ac\uc0ac\uc6a9\ud558\uace0, \uacf5\ud1b5\ub41c \ub3d9\uc791\uc744 \ubaa8\ub4c8\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n
- \ubc84\uc804 \uad00\ub9ac:<\/strong> \ub78c\ub2e4\uc640 \uace0\ucc28 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uba74, \ud2b9\uc815 \ub3d9\uc791\uc744 \ud568\uc218\ub85c \ubd84\ub9ac\ud558\uc5ec \ubc84\uc804 \uad00\ub9ac\ub97c \uc27d\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n
6. \uacb0\ub860<\/h2>\n
\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc790\ubc14\uc758 \ub78c\ub2e4 \ud568\uc218\uc640 \uace0\ucc28 \ud568\uc218\uc5d0 \ub300\ud574 \ub2e4\ub8e8\uc5c8\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ub2a5\ub4e4\uc740 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc5d0\uc11c \ub9e4\uc6b0 \uc720\uc6a9\ud558\uba70, \ucf54\ub4dc\uc758 \uac00\ub3c5\uc131\uc744 \ub192\uc774\uace0 \uc720\uc9c0\ubcf4\uc218\ub97c \uc6a9\uc774\ud558\uac8c \ud574\uc90d\ub2c8\ub2e4. \uc55e\uc73c\ub85c \uc571 \uac1c\ubc1c \uc2dc \uc774 \uac1c\ub150\ub4e4\uc744 \uc801\uadf9\uc801\uc73c\ub85c \ud65c\uc6a9\ud558\uc5ec \ub354 \ub098\uc740 \uacb0\uacfc\ubb3c\uc744 \ub9cc\ub4e4\uc5b4\ubcf4\uc138\uc694.<\/p>\n
\uc774\uc81c \uc790\ubc14, \ub78c\ub2e4 \ud568\uc218, \uace0\ucc28 \ud568\uc218\uc5d0 \ub300\ud55c \uc774\ud574\uac00 \ub192\uc544\uc84c\uc744 \uac83\uc774\ub77c \uc0dd\uac01\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc5d0 \ub354 \uae4a\uc774 \uc788\ub294 \uc811\uadfc\uc744 \ud560 \uc218 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4. \ub2e4\uc74c \uac15\uc88c\uc5d0\uc11c\ub294 \uc2e4\uc81c\ub85c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc744 \uad6c\ucd95\ud574\ubcf4\ub294 \uc2e4\uc2b5\uc73c\ub85c \ub4e4\uc5b4\uac00\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4. \uac10\uc0ac\ud569\ub2c8\ub2e4.<\/p>\n<\/article>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"
\n (\uc778\uc7901, \uc778\uc7902) -> { \uc2e4\ud589\ud560 \ucf54\ub4dc }\n <\/code><\/pre>\n\uac04\ub2e8\ud55c \uc608\uc81c\ub97c \ud1b5\ud574 \uc774\ud574\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc544\ub798 \ucf54\ub4dc\ub294 \ub450 \uc218\ub97c \ub354\ud558\ub294 \ub78c\ub2e4 \ud568\uc218\ub97c \uc815\uc758\ud558\uace0 \uc0ac\uc6a9\ud558\ub294 \uc608\uc785\ub2c8\ub2e4.<\/p>\n
\n\/\/ \ub450 \uc218\ub97c \ub354\ud558\ub294 \ub78c\ub2e4 \ud568\uc218\nBiFunction sum = (a, b) -> a + b;\n\n\/\/ \uc0ac\uc6a9 \uc608\nint result = sum.apply(5, 10);\nSystem.out.println(result); \/\/ \ucd9c\ub825: 15\n <\/integer,><\/code><\/pre>\n3. \uc790\ubc14\uc758 \uace0\ucc28 \ud568\uc218<\/h2>\n
\uace0\ucc28 \ud568\uc218\ub294 \ud568\uc218\ub97c \uc778\uc790\ub85c \ubc1b\uac70\ub098 \ud568\uc218\ub97c \uacb0\uacfc\ub85c \ubc18\ud658\ud558\ub294 \ud568\uc218\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc790\ubc14\uc5d0\uc11c\ub294 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud558\uc5ec \uace0\ucc28 \ud568\uc218\ub97c \uad6c\ud604\ud569\ub2c8\ub2e4. \uace0\ucc28 \ud568\uc218\ub97c \ud1b5\ud574 \ucf54\ub4dc\ub97c \uc7ac\uc0ac\uc6a9\ud558\uace0, \ubaa8\ub4c8\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
3.1. \uace0\ucc28 \ud568\uc218\uc758 \uc608<\/h3>\n
\ub2e4\uc74c\uc740 \uace0\ucc28 \ud568\uc218\ub97c \uc608\ub85c \ub4dc\ub294 \ucf54\ub4dc\uc785\ub2c8\ub2e4. \uc544\ub798 \ucf54\ub4dc\ub294 \ub450 \uc815\uc218\ub97c \ubc1b\uc544\uc11c \ud2b9\uc815 \uc870\uac74\uc5d0 \ub530\ub77c \uc11c\ub85c \ub2e4\ub978 \ub3d9\uc791\uc744 \uc218\ud589\ud558\ub294 \ud568\uc218\uc785\ub2c8\ub2e4.<\/p>\n
\nimport java.util.function.BiConsumer;\n\npublic class HigherOrderFunctionExample {\n public static void main(String[] args) {\n \/\/ \uace0\ucc28 \ud568\uc218\ub85c \ub450 \uc218\ub97c \ube44\uad50\ud558\uc5ec \ucd9c\ub825\n compareAndAct(5, 10, (a, b) -> {\n if (a > b) {\n System.out.println(\"a\ub294 b\ubcf4\ub2e4 \ud07d\ub2c8\ub2e4.\");\n } else {\n System.out.println(\"a\ub294 b\ubcf4\ub2e4 \uc791\uac70\ub098 \uac19\uc2b5\ub2c8\ub2e4.\");\n }\n });\n }\n\n static void compareAndAct(int a, int b, BiConsumer action) {\n action.accept(a, b);\n }\n}\n <\/integer,><\/code><\/pre>\n4. \uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c\uc758 \ub78c\ub2e4\uc640 \uace0\ucc28 \ud568\uc218<\/h2>\n
\uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c\ub294 \uc790\uc8fc \uc0ac\uc6a9\ub418\ub294 \ucf5c\ubc31 \uc778\ud130\ud398\uc774\uc2a4\ub4e4\uc744 \ub78c\ub2e4 \ud45c\ud604\uc2dd\uacfc \ud568\uaed8 \ud65c\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, Button \ud074\ub9ad \uc774\ubca4\ud2b8\ub97c \ucc98\ub9ac\ud558\ub294 \uacbd\uc6b0, \uc544\ub798\uc640 \uac19\uc774 \ub78c\ub2e4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\nButton myButton = findViewById(R.id.my_button);\nmyButton.setOnClickListener(v -> {\n \/\/ \ubc84\ud2bc \ud074\ub9ad \uc2dc \ub3d9\uc791\n Toast.makeText(this, \"\ubc84\ud2bc\uc774 \ud074\ub9ad\ub418\uc5c8\uc2b5\ub2c8\ub2e4.\", Toast.LENGTH_SHORT).show();\n});\n <\/code><\/pre>\n5. \ub78c\ub2e4 \ud568\uc218\uc640 \uace0\ucc28 \ud568\uc218\uc758 \uc7a5\uc810<\/h2>\n\n- \uac00\ub3c5\uc131 \ud5a5\uc0c1:<\/strong> \ud568\uc218\uc758 \ub0b4\uc6a9\uc744 \uac04\ub7b5\ud558\uac8c \ud45c\ud604\ud560 \uc218 \uc788\uc5b4 \ucf54\ub4dc\ub97c \uc774\ud574\ud558\uae30 \uc26c\uc6cc\uc9d1\ub2c8\ub2e4.<\/li>\n
- \ucf54\ub4dc \uc7ac\uc0ac\uc6a9\uc131:<\/strong> \uace0\ucc28 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \ucf54\ub4dc\ub97c \uc7ac\uc0ac\uc6a9\ud558\uace0, \uacf5\ud1b5\ub41c \ub3d9\uc791\uc744 \ubaa8\ub4c8\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n
- \ubc84\uc804 \uad00\ub9ac:<\/strong> \ub78c\ub2e4\uc640 \uace0\ucc28 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uba74, \ud2b9\uc815 \ub3d9\uc791\uc744 \ud568\uc218\ub85c \ubd84\ub9ac\ud558\uc5ec \ubc84\uc804 \uad00\ub9ac\ub97c \uc27d\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n
6. \uacb0\ub860<\/h2>\n
\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc790\ubc14\uc758 \ub78c\ub2e4 \ud568\uc218\uc640 \uace0\ucc28 \ud568\uc218\uc5d0 \ub300\ud574 \ub2e4\ub8e8\uc5c8\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ub2a5\ub4e4\uc740 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc5d0\uc11c \ub9e4\uc6b0 \uc720\uc6a9\ud558\uba70, \ucf54\ub4dc\uc758 \uac00\ub3c5\uc131\uc744 \ub192\uc774\uace0 \uc720\uc9c0\ubcf4\uc218\ub97c \uc6a9\uc774\ud558\uac8c \ud574\uc90d\ub2c8\ub2e4. \uc55e\uc73c\ub85c \uc571 \uac1c\ubc1c \uc2dc \uc774 \uac1c\ub150\ub4e4\uc744 \uc801\uadf9\uc801\uc73c\ub85c \ud65c\uc6a9\ud558\uc5ec \ub354 \ub098\uc740 \uacb0\uacfc\ubb3c\uc744 \ub9cc\ub4e4\uc5b4\ubcf4\uc138\uc694.<\/p>\n
\uc774\uc81c \uc790\ubc14, \ub78c\ub2e4 \ud568\uc218, \uace0\ucc28 \ud568\uc218\uc5d0 \ub300\ud55c \uc774\ud574\uac00 \ub192\uc544\uc84c\uc744 \uac83\uc774\ub77c \uc0dd\uac01\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc5d0 \ub354 \uae4a\uc774 \uc788\ub294 \uc811\uadfc\uc744 \ud560 \uc218 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4. \ub2e4\uc74c \uac15\uc88c\uc5d0\uc11c\ub294 \uc2e4\uc81c\ub85c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc744 \uad6c\ucd95\ud574\ubcf4\ub294 \uc2e4\uc2b5\uc73c\ub85c \ub4e4\uc5b4\uac00\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4. \uac10\uc0ac\ud569\ub2c8\ub2e4.<\/p>\n<\/article>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"