{"id":389,"date":"2020-03-23T09:00:05","date_gmt":"2020-03-23T00:00:05","guid":{"rendered":"http:\/\/mobilelab.khu.ac.kr\/?p=389"},"modified":"2020-04-04T22:05:10","modified_gmt":"2020-04-04T13:05:10","slug":"be-dart-programmer-10","status":"publish","type":"post","link":"http:\/\/mobilelab.khu.ac.kr\/wordpress\/2020\/03\/23\/be-dart-programmer-10\/","title":{"rendered":"Dart Programmer \ub418\uae30 [10]"},"content":{"rendered":"\n<h4>&lt; Dart \uae30\ucd08\ubb38\ubc95 &#8211; Boolean &amp; Conditional Statement &gt;<\/h4>\n\n\n\n<p>\uc9c0\uae08\uae4c\uc9c0 \uc0b4\ud3b4\ubcf8 \uc815\uc218, \uc2e4\uc218 \ubc0f \ubb38\uc790\uc5f4\uc740 \uc218\ud559\uacfc \uc6f9\/\ucc45 \ub4f1\uc758 \uc77c\uc0c1\uc801\uc778 \ud658\uacbd\uc5d0\uc11c \ub2e4\ub8f0 \uc218 \uc788\ub294 \ub370\uc774\ud0c0 \ud0c0\uc785\ub4e4 \uc785\ub2c8\ub2e4. \uc774 \uae00\uc5d0\uc11c \uc0b4\ud3b4\ubcfc Boolean\uc740 \uc811\ud574 \ubcf8 \uc0ac\ub78c\ub3c4 \uc788\uc9c0\ub9cc \ub2e4\uc18c \ub0af\uc120 \uc0ac\ub78c\ub3c4 \uc788\uc744 \uc218 \uc788\ub294 \ubd84\uc57c \uc785\ub2c8\ub2e4. \uc774\uc0b0\uc218\ud559(discrete mathematics) \ub4f1 \uc218\ud559\uc5d0\uc11c\ub294 \ub450\uac00\uc9c0 \uac12\uc73c\ub85c \ub9cc \uc774\ub8e8\uc5b4\uc9c4 \ubb38\uc81c\ub97c \ub2e4\ub8e8\ub294 \ubd84\uc57c\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub9ac\uace0 Boolean \ud0c0\uc785\uc744 \uac00\uc7a5 \ub9ce\uc774 \uc0ac\uc6a9\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c\uc758 \uc5ed\ud560\uc740, \ud504\ub85c\uadf8\ub7a8\uc758 \uc218\ud589\uc911\uc5d0 \uc67c\ucabd \ud639\uc740 \uc624\ub978\ucabd\uc744 \uc120\ud0dd\ud558\ub294 \uacbd\uc6b0\uc758 \ubb38\ubc95\uc785\ub2c8\ub2e4. <\/p>\n\n\n\n<h4>Boolean Types<\/h4>\n\n\n\n<p>Boolean \ub370\uc774\ud0c0 \ud0c0\uc785\uc758 \uc758\ubbf8\ub294 \ub450 \uac00\uc9c0\uc758 \uac12\uc73c\ub85c \uc774\ub8e8\uc5b4 \uc84c\ub2e4\ub294 \uc758\ubbf8 \uc785\ub2c8\ub2e4. \ud1b5\uc0c1 \ub17c\ub9ac \uc5f0\uc0b0\uc774\ub77c\uace0\ub3c4 \ud558\ub294\ub370, \ub450\uac00\uc9c0 \uac12\uc774\ub780 <em>true<\/em> \ud639\uc740 <em>false<\/em>\ub97c \uc758\ubbf8\ud55c\ub2e4. Boolean \ub370\uc774\ud0c0\ub294 static\ud55c \ud0c0\uc785\uc73c\ub85c\ub294 bool\ub85c \ub098\ud0c0\ub0b4\uba70, dynamic \ud0c0\uc785\uc778 var, dynamic \ub4f1\ub3c4 \ub3d9\uc77c\ud558\uac8c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. darttutorial-10-01.dart\uc5d0\ub294 static \ud0c0\uc785\uc758 logic1\uc744 bool \ud0c0\uc785\uc73c\ub85c \ub9cc\ub4e0 \ud6c4, true \uac12\uc744 \uc800\uc7a5\ud558\ub294 \uc608\uc81c\ub97c \ubcf4\uc5ec \uc90d\ub2c8\ub2e4. \uadf8\ub9ac\uace0 logic2\ub97c dynamic \ud0c0\uc785\uc73c\ub85c \ub9cc\ub4e0\ud6c4, false \uac12\uc744 \uc800\uc7a5\ud558\ub294 \uc608\uc81c\ub97c \ubcf4\uc5ec \uc90d\ub2c8\ub2e4. print \uad6c\ubb38\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub450 \uac12\uc744 \ucd9c\ub825\ud558\uba74 true false \ucc98\ub7fc \uacb0\uacfc\uac00 \ucd9c\ub825\ub429\ub2c8\ub2e4. <\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ darttutorial-10-01.dart\n\nvoid main() {\n  bool logic1 = true;\n  dynamic logic2 = false;\n\n  print(\"$logic1 $logic2\");\n}<\/pre>\n\n\n\n<h4>Boolean Operators<\/h4>\n\n\n\n<p>\ub450 \uac00\uc9c0 \uac12\uc744 \uac16\ub294 Boolean \ub370\uc774\ud0c0\ub294 \uc804\uc6a9\uc758 \uc5f0\uc0b0\uc790\uac00 \uc788\uc73c\uba70, \ud1b5\uc0c1 \ub17c\ub9ac \uc5f0\uc0b0\uc790(logic operator)\ub77c\uace0 \ubd80\ub985\ub2c8\ub2e4. \uc544\ub9c8\ub3c4 \uc218\ud559 \uae30\ud638\uc5d0\uc11c \uc774\ubbf8 \ubd10 \uc654\uc744 \uc775\uc219\ud55c \uc5f0\uc0b0\uc790\ub4e4 \uc77c \uac81\ub2c8\ub2e4.<\/p>\n\n\n\n<p><em>Equal (==)<\/em> \uc5f0\uc0b0\uc790\ub294 \ub450 \uac12\uc774 \uac19\uc740 \uc9c0\ub97c \uac80\uc0ac\ud569\ub2c8\ub2e4. \uc218\ud559\uc5d0\uc11c\ub294 \ub4f1\ud638 \uae30\ud638 =\ub97c \ud558\ub098\ub9cc \uc0ac\uc6a9\ud574\ub3c4 \ube44\uad50\ub97c \ud558\ub294 \uc6a9\ub3c4\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc9c0\ub9cc, \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub4e4\uc5d0\uc11c\ub294 \uac19\uc740 \uae30\ud638\ub97c \ub450\uac00\uc9c0 \uc774\uc0c1\uc758  \uc758\ubbf8\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \ub4f1\ud638\ub294 \uc624\ub978\ucabd\uc758 \uac12\uc744 \uc67c\ucabd\uc73c\ub85c \uc804\ub2ec\ud558\ub294 assignment \uc6a9\ub3c4\ub85c\ub9cc \uc0ac\uc6a9\ud558\uba70, \ub450 \uac12\uc744 \ube44\uad50\ud558\uace0\uc790 \ud55c\ub2e4\uba74, \ub4f1\ud638\ub97c \ub450\ubc88 \uc5f0\uc18d\uc801\uc73c\ub85c \uc368\uc57c \ud569\ub2c8\ub2e4. Equal \uc5f0\uc0b0\uc790\ub294 \ub450 \uac12\uc774 \uac19\ub2e4\uba74 true, \uadf8\ub807\uc9c0 \uc54a\uace0 \ub2e4\ub974\uba74 false\ub85c \ucc98\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p><em>Not-equal (!=)<\/em> \uc5f0\uc0b0\uc790\ub294 \ub450 \uac12\uc774 \ub2e4\ub978 \uc9c0\ub97c \uac80\uc0ac\ud569\ub2c8\ub2e4. \uc704\uc758 Equal\uc5d0 \ubc18\ub300\ub418\ub294 \uac1c\ub150\uc73c\ub85c, \ube44\uad50\ud558\ub294 \ub450 \uac12\uc774 \ub2e4\ub974\uba74 true, \uac19\uc73c\uba74 false\ub85c \ucc98\ub9ac\ud569\ub2c8\ub2e4. \uc218\ud559\uc5d0\uc11c\ub294 \ub4f1\ud638 \uc704\uc5d0 \uc0ac\uc120\uc744 \uae0b\ub294 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uc9c0\ub9cc, \ud504\ub85c\uadf8\ub798\ubc0d\uc5d0\uc11c\ub294 \ud0a4\ubcf4\ub4dc\uc5d0 \uc874\uc7ac\ud560 \uc218 \uc788\ub294 \ubc84\ud2bc \uac2f\uc218\uc758 \uc81c\uc57d\uc73c\ub85c \uc778\ud558\uc5ec, \ub450 \uac1c\uc758 \uae00\uc790\ub97c \uc5f0\uc774\uc5b4\uc11c \uc5f0\uacb0\ud568\uc73c\ub85c\uc368 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\ub2e4\uc74c\uc740 \ub450 \uac12 \uc911 \uc5b4\ub290\ucabd\uc774 \ud070\uc9c0 \ud639\uc740 \uc791\uc740\uc9c0\ub97c \ube44\uad50\ud558\ub294 \uc5f0\uc0b0\uc790\ub4e4\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub4e4\uc740 <em>Greater than (&gt;), Greater than or equal to (&gt;=), Less than (&lt;), Less than or equal to (&lt;=) <\/em>\uc5f0\uc0b0\uc790\ub4e4 \uc785\ub2c8\ub2e4. \uc21c\uc11c\ub300\ub85c \uc67c\ucabd\uc758 \uac12\uc774 \uc624\ub978\ucabd \ubcf4\ub2e4 \ud070 \uacbd\uc6b0, \uc67c\ucabd\uc758 \uac12\uc774 \uc624\ub978\ucabd \ubcf4\ub2e4 \ud06c\uac70\ub098 \uac19\uc744\ub54c, \uc624\ub978\ucabd \uac12\uc774 \uc67c\ucabd \ubcf4\ub2e4 \ud070 \uacbd\uc6b0, \uc624\ub978\ucabd \uac12\uc774 \uc67c\ucabd \ubcf4\ub2e4 \ud06c\uac70\ub098 \uac19\uc744\ub54c true\ub97c \ub098\ud0c0\ub0b4\uba70, \uadf8\ub807\uc9c0 \uc54a\uc740 \uacbd\uc6b0\ub294 false\ub85c \ucc98\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>Not (!) \uc5f0\uc0b0\uc790\ub294 \ud558\ub098\uc758 \uac12\uc5d0 \ub300\ud574\uc11c, \uc6d0\ub798 \uac00\uc9c0\uace0 \uc788\ub294 \uac12\uc744 \ubc18\ub300\ub85c \ub4a4\uc9d1\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \ub9cc\uc57d true \uac12\uc5d0 \ub300\ud574\uc11c Not \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uba74 false\ub85c \ucc98\ub9ac\ud569\ub2c8\ub2e4. \ubc18\ub300\ub85c false \uac12\uc5d0 \ub300\ud574\uc11c Not \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uba74 true\ub85c \ucc98\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p><em>AND (&amp;&amp;)<\/em> \uc5f0\uc0b0\uc790\ub3c4 \uc218\ud559\uc5d0\uc11c \uac00\uc838\uc628 \uc5f0\uc0b0\uc790\ub85c\uc368, \ub450 \uac12\uc774 \ubaa8\ub450 true \uc778\uacbd\uc6b0\ub294 true\uc774\uba70, \uadf8\ub807\uc9c0 \uc54a\uc740 \uacbd\uc6b0\ub294 false \uc785\ub2c8\ub2e4. \ubb38\uc7a5\uc73c\ub85c \ud480\uba74 &#8220;A \uc870\uac74\uacfc B \uc870\uac74\uc774 \ubaa8\ub450 true \uc774\uba74 true&#8221;\ub85c \ud574\uc11d\ud569\ub2c8\ub2e4. <\/p>\n\n\n\n<p><em>OR (||) <\/em>\uc5f0\uc0b0\uc790\ub3c4 \uc218\ud559\uc5d0\uc11c \uac00\uc838\uc628 \uc5f0\uc0b0\uc790\ub85c\uc368, \ub450 \uac12\uc911 \ud558\ub098\ub77c\ub3c4 true \uc774\uba74, true\ub85c \ucc98\ub9ac\ud569\ub2c8\ub2e4. \ubb38\uc7a5\uc73c\ub85c \ud480\uba74 &#8220;A \uc870\uac74\uacfc B \uc870\uac74 \uc911 \ud558\ub098\ub77c\ub3c4 true \uc774\uba74 true&#8221;\ub85c \ud574\uc11d\ud569\ub2c8\ub2e4. <\/p>\n\n\n\n<p>\uc9c0\uae08\uae4c\uc9c0 \uc124\uba85\ud55c \ub17c\ub9ac \uc5f0\uc0b0\uc790\ub4e4\uc744 \uc544\ub798\uc758 darttutorial-10-02.dart \ud504\ub85c\uadf8\ub7a8\uc758 \uc608\uc81c\ub97c \ud1b5\ud574\uc11c \uc774\ud574\ud558\ub3c4\ub85d \ud569\ub2c8\ub2e4. \ubcf5\uc7a1\ud558\uc9c0 \uc54a\uc740 \uc5f0\uc0b0\uc790\ub4e4\uc774\ubbc0\ub85c \ubcc4\ub3c4\uc758 \uc124\uba85\uc740 \ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ darttutorial-10-02.dart\n\nvoid main() {\n  var cond1 = true;\n  var cond2 = false;\n  var num1 = 1;\n  var num2 = 9;\n\n  var res1  = (cond1 == cond2);\n  var res2  = (cond1 != cond2);\n  var res3  = (num1 &gt; num2);\n  var res4  = (num1 &lt; num2);\n  var res5  = (num1 &gt;= num2);\n  var res6  = (num1 &lt;= num2);\n  var res7  = (!cond1);\n  var res8  = (!cond2);\n  var res9  = (cond1 &amp;&amp; cond2);\n  var res10 = (cond1 || cond2);\n\n  \/\/ print false true\n  print(\"$res1 $res2\");\n\n  \/\/ print false true false true\n  print(\"$res3 $res4 $res5 $res6\");\n\n  \/\/ print false true false true\n  print(\"$res7 $res8 $res9 $res10\");\n}<\/pre>\n\n\n\n<h4>Conditional Statements (if, else if, else)<\/h4>\n\n\n\n<p>Dart\uc5d0\uc11c if \uad6c\ubb38\uc740 \uc601\uc5b4 \uc758\ubbf8 \uadf8\ub300\ub85c &#8220;\ub9cc\uc57d ~ \ud558\ub2e4\uba74&#8221;\uc73c\ub85c \ud574\uc11d\ud569\ub2c8\ub2e4. \ud504\ub85c\uadf8\ub7a8\uc758 \uc218\ud589\uc744 \ud2b9\uc815 \uc870\uac74\uc5d0 \ub9de\ucdb0\uc11c \uc11c\ub85c \ub2e4\ub978 \ubc29\ud5a5\uc73c\ub85c \ubc14\uafd4 \uc8fc\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. if \uad6c\ubb38\uc740 \uc608\uc81c \ud504\ub85c\uadf8\ub7a8\uc744 \uba3c\uc800 \uc774\ud574\ud55c \ud6c4 \uc124\uba85\uc744 \ud558\ub3c4\ub85d \ud569\ub2c8\ub2e4. \ub2e4\uc74c\uc758 darttutorial-10-02.dart\ub97c \uc218\ud589\ud574 \ubd05\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ darttutorial-10-02.dart\n\nvoid main() {\n  var num1 = 1;\n  var num2 = 2;\n\n  if(num1 &gt; num2) {\n    print(\"num1 is greater than num2\");\n  } else if(num1 == num2) {\n    print(\"num1 equal to num2\");\n  } else {\n    print(\"num1 is less than num2\");\n  }\n}<\/pre>\n\n\n\n<p>\uc774 \ud504\ub85c\uadf8\ub7a8\uc740 \uacb0\uacfc\ub85c num1 is less than num2\ub97c \ucd9c\ub825\ud569\ub2c8\ub2e4. if \ubb38\ubc95\uc740 &#8220;if(a) { &#8230; }&#8221;\uc640 \uac19\uc2b5\ub2c8\ub2e4. a \uc870\uac74\uc774 true \uc774\uba74 { } \uc548\uc758 \ubb38\uc7a5\uc744 \uc218\ud589\ud569\ub2c8\ub2e4. \ub9cc\uc57d a \uc870\uac74\uc774 false \ub77c\uba74, { }\uc548\uc73c\ub85c \ub4e4\uc5b4\uac00\uc9c0 \uc54a\uace0, if \uad6c\ubb38\uc5d0 \uc0c1\uc751\ud558\ub294 else if \ud639\uc740 else \uad6c\ubb38\uc774 \uc788\ub294\uc9c0 \ud655\uc778 \ud569\ub2c8\ub2e4. darttutorial-10-02.dart\uc5d0\uc11c, if \uad6c\ubb38\uc5d0\uc11c \uac80\uc0ac\ud558\ub294 \uc870\uac74\uc774 num1 &gt; num2\uc778\ub370, num1\uc740 1\uc774\uace0 num2\ub294 2 \uc774\ubbc0\ub85c, \uc774 \ubb38\uc7a5\uc758 \uacb0\uacfc\ub294 1 &gt; 2 \uc774\ubbc0\ub85c false \uc785\ub2c8\ub2e4. \uc989, if \uad6c\ubb38 \ub4a4\uc758 { }\uc5d0\ub294 \ub4e4\uc5b4\uac00\uc9c0 \uc54a\uc73c\ubbc0\ub85c, \ub2e4\uc74c \uc870\uac74\uc778 else if ((num1 == num2) { &#8230; }\ub85c \uc774\ub3d9\ud569\ub2c8\ub2e4. else if\ub294 \uc55e\uc758 if \uad6c\ubb38\uc774 false\uc778 \uacbd\uc6b0, \ud6c4\uc18d\uc73c\ub85c \uc870\uac74 \uac80\uc0ac\ub97c \ud558\uae30 \uc704\ud558\uc5ec \uc0ac\uc6a9\ud569\ub2c8\ub2e4. 1 == 2\ub3c4 true\uac00 \uc544\ub2c8\ubbc0\ub85c, \uc790\uc5f0\uc2a4\ub7fd\uac8c \ub2e4\uc74c \uc870\uac74\uc778 else\ub85c \uc774\ub3d9\ud558\uac8c \ub429\ub2c8\ub2e4. else \uad6c\ubb38\uc740 \ubcc4\ub3c4\ub85c \uc870\uac74\uc744 \uac80\uc0ac\ud558\uc9c0 \uc54a\uace0 \ub4a4\uc758 { } \uc548\uc73c\ub85c \ub4e4\uc5b4\uac00\uac8c \ub429\ub2c8\ub2e4. \uc55e\uc5d0\uc11c \uc218\ud589\ud55c \uc870\uac74 \uac80\uc0ac\uac00 \ubaa8\ub450 false\uac00 \ub418\uc5b4\uc11c, \uc774\uc5d0 \ub300\ud55c \ud6c4\uc18d \uc791\uc5c5\uc744 \ud574\uc57c \ud558\ub294 \uacbd\uc6b0\uc5d0 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc138\ubc88\uc9f8 print \uad6c\ubb38\ub9cc \uc218\ud589\ub418\ub294 \uac83\ub2c8\ub2e4. \ub9cc\uc57d num2\uc758 \uac12\uc744 1\ub85c \ubc14\uafd4\uc11c \uc2e4\ud589\ud55c\ub2e4\uba74, num1\uacfc num2\uac00 \uac19\uc744\ub54c \uc218\ud589\ud558\ub294 \ub450\ubc88\uc9f8 print \uad6c\ubb38\ub9cc \ucd9c\ub825\ub429\ub2c8\ub2e4. \ub9cc\uc57d num2\ub97c 0\uc73c\ub85c \ubc14\uafd4\uc11c \uc2e4\ud589\ud55c\ub2e4\uba74, \uccab\ubc88\uc9f8 if() \uad6c\ubb38\uc774 true \uc774\ubbc0\ub85c, \uccab\ubc88\uc9f8 print \uad6c\ubb38\ub9cc \ucd9c\ub825\ud558\uace0 \ud504\ub85c\uadf8\ub7a8\uc744 \uc885\ub8cc\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h4>Conditional Statements (switch, case, break, default)<\/h4>\n\n\n\n<p>if, else if, else \uad6c\ubb38\uc744 \uc0ac\uc6a9\ud558\uc5ec\ub3c4 \ubb38\uc81c\uac00 \uc5c6\uc9c0\ub9cc, \uc870\uac74 \uac80\uc0ac\uc758 \uc885\ub958\uac00 \ub9ce\uace0 \ubcf5\uc7a1\ud55c \uacbd\uc6b0, Dart \uc5b8\uc5b4\ub294 \ubcf4\ub2e4 \uc9c1\uad00\uc801\uc778 \ubb38\ubc95\uc73c\ub85c switch, case, break, default \uad6c\ubb38\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc55e\uc11c\uc758 if \uad6c\ubb38\ub4e4\uacfc \ub9c8\ucc2c\uac00\uc9c0\ub85c \uc608\uc81c \ud504\ub85c\uadf8\ub7a8\uc778 \uc544\ub798\uc758 darttutorial-10-04.dart\ub97c \uba3c\uc800 \uc2e4\ud589\ud574 \ubcf4\uace0, \uc774\uc5d0 \ub300\ud55c \uc124\uba85\uc744 \uc218\ud589\ud558\ub3c4\ub85d \ud569\ub2c8\ub2e4. <\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ darttutorial-10-04.dart\n\nvoid main() {\n  var command = 'OPEN';\n  switch (command) {\n    case 'CLOSED':\n      print(\"CLOSED\");\n      break;\n    case 'PENDING':\n      print(\"PENDING\");\n     break;\n    case 'APPROVED':\n      print(\"APPROVED\");\n      break;\n    case 'DENIED':\n      print(\"DENIED\");\n      break;\n    case 'OPEN':\n      print(\"OPEN\");\n      break;\n    default:\n      print(\"default\");\n  }\n}<\/pre>\n\n\n\n<p>switch \uad6c\ubb38\uc740 switch( command ) { &#8230; } \ucc98\ub7fc \uc0ac\uc6a9\ud558\uba70, command \ubcc0\uc218\uac00 \uac16\ub294 \uac12\uc5d0 \ubd80\ud569\ud558\ub294 \uacbd\uc6b0\uc5d0 \ub300\ud55c \ub3d9\uc791\uc744 { &#8230; } \uc548\uc5d0\uc11c \ucc3e\ub294 \uc791\uc5c5\uc744 \ud569\ub2c8\ub2e4. { &#8230; } \uc548\uc5d0\ub294 case \uad6c\ubb38\uc774 \uc788\uc73c\uba70, \uc5ec\uae30\uc5d0 command \uc870\uac74\uc774 \ubd80\ud569\ud558\uae30\ub97c \ud76c\ub9dd\ud558\ub294 \uc870\uac74\uc744 \uc791\uc131\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uba74, case &#8216;OPEN&#8217;:\uc73c\ub85c \uc791\uc131\uc744 \ud558\uba74, command \ubcc0\uc218\uac00 \ubb38\uc790\uc5f4 &#8220;OPEN&#8221;\uacfc \uac19\uc740 \uac12\uc77c \uacbd\uc6b0\uc5d0 \uc218\ud589\ud558\ub294 \ubb38\uc7a5\ub4e4\uc774 \uae30\uc220\ub418\uc5b4 \uc788\ub2e4\ub294 \uc758\ubbf8\uc785\ub2c8\ub2e4. \uc608\uc81c \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c command \ubcc0\uc218\ub294 &#8216;OPEN&#8217; \ubb38\uc790\uc5f4\uc744 \uac00\uc9c0\uace0 \uc788\uc73c\ubbc0\ub85c, \ub2e4\ub978 case \uad6c\ubb38\uc740 \ubb34\uc2dc\ud558\uac8c \ub418\uba70, case &#8216;OPEN&#8217;: \uad6c\ubb38\uc744 \uc218\ud589\ud558\uac8c \ub429\ub2c8\ub2e4. \uc774 \uacbd\uc6b0, case &#8216;OPEN&#8217;: \uad6c\ubb38\uc5d0 \uc788\ub294 break; \uad6c\ubb38\uae4c\uc9c0\uc758 \uc791\uc5c5\uc744 \uc218\ud589\ud558\ub294\ub370, \uc774 \uacbd\uc6b0\ub294 \ud55c\uc904 \ubfd0\uc73c\ub85c \ub2e8\uc21c\ud558\uac8c \ud654\uba74\uc5d0 &#8220;OPEN&#8221;\uc774\ub77c\ub294 \uae00\uc790\ub9cc \ucd9c\ub825\ud558\ub294 \uc791\uc5c5\uc778 print(&#8220;OPEN&#8221;);\ub97c \uc218\ud589\ud569\ub2c8\ub2e4. \ub9cc\uc57d command \ubcc0\uc218\uac00 &#8216;DENIED&#8217; \uac12\uc744 \uac00\uc9c0\uace0 \uc788\ub2e4\uba74, \uc774 \ud504\ub85c\uadf8\ub7a8\uc740 print(&#8220;DENIED&#8221;);\uc744 \uc218\ud589\ud569\ub2c8\ub2e4. \ub9cc\uc57d command \ubcc0\uc218\uac00, case \uad6c\ubb38 \uc911 \uc5b4\ub514\uc5d0\ub3c4 \uc18d\ud558\uc9c0 \uc54a\ub294 &#8220;OK&#8221; \uac12\uc744 \uac19\ub294 \ub2e4\uace0 \uac00\uc815\ud558\uba74, \uc5b4\ub5a0\ud55c case \uad6c\ubb38\uc5d0\ub3c4 \ubd80\ud569\ud558\uc9c0 \uc54a\uc73c\ubbc0\ub85c, \uc774\ub7ec\ud55c \uacbd\uc6b0\ub294 default: \uad6c\ubb38\uc5d0\uc11c \uc815\uc758\ud55c \ub3d9\uc791\uc744 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>darttutorial-10-04.dart\ub294 command \uac12\uc5d0 \ub530\ub77c \uc11c\ub85c \ub2e4\ub978 \ub3d9\uc791\uc744 \ud558\ub3c4\ub85d \ub9cc\ub4e0 \uacbd\uc6b0\uc785\ub2c8\ub2e4. \ud558\uc9c0\ub9cc, \uc2e4\uc81c \uc0c1\ud669\uc5d0\uc11c\ub294 \ubcf5\uc218\uc758 \uc870\uac74\uc5d0\uc11c \uac19\uc740 \ub3d9\uc791\uc744 \ud558\ub294 \uacbd\uc6b0\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub300\uc18c\ubb38\uc790\ub97c \uad6c\ubd84\ud558\uc9c0 \uc54a\ub294 \uacbd\uc6b0 &#8216;close&#8217;\uc640 &#8216;CLOSE&#8217;\uac00 \uac19\uc740 \ub3d9\uc791\uc744 \uc218\ud589\ud558\ub294 \uacbd\uc6b0\uc785\ub2c8\ub2e4. darttutorial-10-05.dart \ud504\ub85c\uadf8\ub7a8\uc740 \uc774\ub7f0 \uacbd\uc6b0\uc5d0 \ub300\ud55c \uc608\uc81c \ud504\ub85c\uadf8\ub7a8\uc785\ub2c8\ub2e4. \ub450\uac1c\uc758 case \uad6c\ubb38\uc774 \uc911\uac04\uc5d0 \uc5b4\ub5a0\ud55c \ubb38\uc7a5\ub3c4 \ud3ec\ud568\ub418\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\uc5d0\uc11c, \uc5f0\uc18d\uc801\uc73c\ub85c \uc5f0\uacb0\ub418\uc5b4 \uc788\ub294 \uac83\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ darttutorial-10-05.dart\n\nvoid main() {\n  var command = 'close';\n  switch (command) {\n    case 'close':\n    case 'CLOSE':\n      print(\"CLOSE\");\n      break;\n    case 'open':\n    case 'OPEN':\n      print(\"OPEN\");\n      break;\n    default:\n      print(\"default\");\n  }\n}<\/pre>\n\n\n\n<p>\ud639\uc2dc C\/C++\uacfc \uac19\uc740 \uc5b8\uc5b4\uc5d0 \uacbd\ud5d8\uc774 \uc788\ub2e4\uba74, darttutorial-10-06.dart \ucc98\ub7fc \uc18c\ubb38\uc790\uc778 \uacbd\uc6b0\uc5d0 \ub300\ud574\uc11c, \ub300\ubb38\uc790\ub85c \uc785\ub825\ud558\ub77c\ub294 \uacbd\uace0 \ubb38\uad6c\ub97c \ucd9c\ub825\ud558\ub418, \ub300\ubb38\uc0ac\/\uc18c\ubb38\uc790 \uc0c1\uad00\uc5c6\uc774 \ub3d9\uc791\ud558\ub294 \uad6c\ubb38\uc778 print(&#8220;CLOSE&#8221;); \ud639\uc740  print(&#8220;OPEN&#8221;);\ub97c \ucd9c\ub825\ud558\uace0 \uc2f6\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Dart\ub294 \uc774\ub7f0 \uad6c\ubb38\uc744 \uc9c0\uc6d0\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c print(&#8220;Use uppercase.&#8221;); \uad6c\ubb38\uc774 \ub4e4\uc5b4\uac04 case &#8216;close&#8217;:\uc640 case &#8216;open&#8217;:\ub294 \uc5d0\ub7ec\ub97c \uc720\ubc1c\ud558\uac8c \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ darttutorial-10-06.dart\n\nvoid main() {\n  var command = 'close';\n  switch (command) {\n    case 'close': \/\/ Error\n      print(\"Use uppercase.\");\n    case 'CLOSE':\n      print(\"CLOSE\");\n      break;\n    case 'open': \/\/ Error\n      print(\"Use uppercase.\");\n    case 'OPEN':\n      print(\"OPEN\");\n      break;\n    default:\n      print(\"default\");\n  }\n}<\/pre>\n\n\n\n<h4>Assert Statement<\/h4>\n\n\n\n<p>Dart \uc5b8\uc5b4\uc5d0\uc11c\ub294 \ub514\ubc84\uadf8\ub97c \uc9c0\uc6d0\ud558\uae30 \uc704\ud55c \uc6a9\ub3c4\uc758 \ubb38\ubc95\ub4e4\uc774 \uc788\uc73c\uba70, assert( condition ); \uad6c\ubb38\uc774 \ub300\ud45c\uc801\uc778 \uc6a9\ub3c4\uc785\ub2c8\ub2e4. assert( &#8230; ) \uad6c\ubb38\uc740 \ud504\ub85c\uadf8\ub7a8\uc744 debug \ubaa8\ub4dc\ub85c \uc2e4\ud589 \uc2dc\ucf30\uc744\ub54c\uc5d0\ub9cc \ub3d9\uc791\ud558\ub294\ub370, condition\uc774 true \uc870\uac74\uc774\uba74 \uc544\ubb34\ub7f0 \uc77c\uc774 \uc5c6\uc9c0\ub9cc, condition\uc774 false\uac00 \ub418\uba74 \ud504\ub85c\uadf8\ub7a8\uc758 \uc218\ud589\uc744 \uc911\uc9c0 \uc2dc\ud0b5\ub2c8\ub2e4. <\/p>\n\n\n\n<p>\uc544\ub798\uc758 darttutorial-10-07.dart\ub97c \uc218\ud589\ud558\uba74, bool1\uacfc bool2\uac00 \ub3d9\uc77c\ud558\uac8c true\uc774\ubbc0\ub85c, \ub9c8\uc9c0\ub9c9\uc758 print \uad6c\ubb38\uc774 \uc2e4\ud589\ub429\ub2c8\ub2e4. <\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ darttutorial-10-07.dart\n\nvoid main() {\n  var bool1 = true;\n  var bool2 = true;\n\n  assert(bool1 == bool2);\n\/\/assert(bool1 != bool2);\n\n  print(\"Completed!\");\n}<\/pre>\n\n\n\n<p>\ud558\uc9c0\ub9cc, \uc544\ub798\uc758 darttutorial-10-08.dart\ub97c \uc218\ud589\ud558\uba74, bool1\uacfc bool2\uac00 \ub3d9\uc77c\ud558\uae30\uc5d0 assert \uad6c\ubb38\uc548\uc740 false\uac00 \ub429\ub2c8\ub2e4. \ub530\ub77c\uc11c, \ub9c8\uc9c0\ub9c9\uc758 print \uad6c\ubb38\uc774 \uc2e4\ud589\ub418\uc9c0 \ubabb\ud558\uace0, \ud574\ub2f9 assert \uad6c\ubb38\uc5d0\uc11c \ud504\ub85c\uadf8\ub7a8\uc758 \uc5d0\ub7ec\uac00 \ubc1c\uc0dd\ud558\uace0 \uba48\ucd94\ub294 \uac83\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ darttutorial-10-08.dart\n\nvoid main() {\n  var bool1 = true;\n  var bool2 = true;\n\n\/\/assert(bool1 == bool2);\n  assert(bool1 != bool2);\n\n  print(\"Completed!\");\n}<\/pre>\n\n\n\n<p>\ud504\ub85c\uadf8\ub7a8\uc758 \ub3d9\uc791\uc774 \uba48\ucd98 \ud654\uba74\uc744 \ucc38\uc870\ub85c \uc544\ub798\uc640 \uac19\uc774 \ucea1\uccd0\ud558\uc5ec \ubcf8\ubb38\uc5d0 \ud3ec\ud568 \uc2dc\ucf30\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"921\" height=\"402\" src=\"http:\/\/mobilelab.khu.ac.kr\/wordpress\/wp-content\/uploads\/2020\/01\/\u1109\u1173\u110f\u1173\u1105\u1175\u11ab\u1109\u1163\u11ba-2020-01-26-\u110b\u1169\u1112\u116e-11.04.29.png\" alt=\"\" class=\"wp-image-400\" srcset=\"http:\/\/mobilelab.khu.ac.kr\/wordpress\/wp-content\/uploads\/2020\/01\/\u1109\u1173\u110f\u1173\u1105\u1175\u11ab\u1109\u1163\u11ba-2020-01-26-\u110b\u1169\u1112\u116e-11.04.29.png 921w, http:\/\/mobilelab.khu.ac.kr\/wordpress\/wp-content\/uploads\/2020\/01\/\u1109\u1173\u110f\u1173\u1105\u1175\u11ab\u1109\u1163\u11ba-2020-01-26-\u110b\u1169\u1112\u116e-11.04.29-300x131.png 300w, http:\/\/mobilelab.khu.ac.kr\/wordpress\/wp-content\/uploads\/2020\/01\/\u1109\u1173\u110f\u1173\u1105\u1175\u11ab\u1109\u1163\u11ba-2020-01-26-\u110b\u1169\u1112\u116e-11.04.29-768x335.png 768w, http:\/\/mobilelab.khu.ac.kr\/wordpress\/wp-content\/uploads\/2020\/01\/\u1109\u1173\u110f\u1173\u1105\u1175\u11ab\u1109\u1163\u11ba-2020-01-26-\u110b\u1169\u1112\u116e-11.04.29-480x210.png 480w\" sizes=\"(max-width: 921px) 100vw, 921px\" \/><\/figure>\n\n\n\n<h4>\ub9c8\ubb34\ub9ac<\/h4>\n\n\n\n<p>\uc774\ubc88 \uae00\uc5d0\uc11c\ub294 \ud504\ub85c\uadf8\ub7a8\uc758 \ud750\ub984\uc774 \ub2e8\uc21c\ud788 \uc704\uc5d0\uc11c \uc544\ub798\ub85c \ud3ed\ud3ec\uc218\ucc98\ub7fc \ud750\ub974\uc9c0 \uc54a\uace0, \uc911\uac04\uc5d0\uc11c \uc67c\ucabd \ud639\uc740 \uc624\ub978\ucabd\uacfc \uac19\uc774 \ubd84\uae30\uac00 \uc774\ub8e8\uc5b4 \uc9c0\ub294 \ubb38\ubc95\uc744 \ubc30\uc6e0\uc2b5\ub2c8\ub2e4. \uc774\ub97c \uc704\ud55c \uc911\uc694\ud55c \ub370\uc774\ud0c0 \ud0c0\uc785\uc778 true\/false \uac12\uc744 \uac16\ub294 Boolean \ub370\uc774\ud0c0 \ud0c0\uc785\uc5d0 \ub300\ud574\uc11c\ub3c4 \ubc30\uc6e0\uc2b5\ub2c8\ub2e4. \ubd84\uae30\ub97c \ubb38\ubc95\uc73c\ub85c\ub294 if, else if, else \ubc0f switch \uad6c\ubb38\uc5d0 \ub300\ud574\uc11c\ub3c4 \ub2e4\ub8e8\uc5c8\uc2b5\ub2c8\ub2e4. \ub9c8\uc9c0\ub9c9\uc73c\ub85c \ub514\ubc84\uadf8\uc2dc\uc5d0 \ud504\ub85c\uadf8\ub7a8\uc774 \ud2b9\uc815 \uc870\uac74\uc5d0 \ubd80\ud569(\ud639\uc740 \ubd80\ud569\ud558\uc9c0 \uc54a\uc73c\uba74) \ud504\ub85c\uadf8\ub7a8\uc758 \uc218\ud589\uc744 \uc911\ub2e8 \uc2dc\ud0a4\ub294 assert \uad6c\ubb38\uc5d0 \ub300\ud574\uc11c\ub3c4 \ubc30\uc6e0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"http:\/\/mobilelab.khu.ac.kr\/wordpress\/wp-content\/uploads\/2020\/01\/b05-1.jpg\" alt=\"\" class=\"wp-image-267\" width=\"135\" height=\"48\"\/><\/figure><\/div>\n\n\n\n<p><strong>Creative Commons License<\/strong> (<strong>CC BY-NC-ND<\/strong>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&lt; Dart \uae30\ucd08\ubb38\ubc95 &#8211; Boolean &amp; Conditional Statement &gt; \uc9c0\uae08\uae4c\uc9c0 \uc0b4\ud3b4\ubcf8 \uc815\uc218, \uc2e4\uc218 \ubc0f \ubb38\uc790\uc5f4\uc740 \uc218\ud559\uacfc \uc6f9\/\ucc45 \ub4f1\uc758 \uc77c\uc0c1\uc801\uc778 \ud658\uacbd\uc5d0\uc11c \ub2e4\ub8f0 \uc218 \uc788\ub294 \ub370\uc774\ud0c0 \ud0c0\uc785\ub4e4 \uc785\ub2c8\ub2e4. \uc774 \uae00\uc5d0\uc11c \uc0b4\ud3b4\ubcfc Boolean\uc740 &#8230;<\/p>\n","protected":false},"author":1,"featured_media":856,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[3],"tags":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"&lt; Dart \uae30\ucd08\ubb38\ubc95 - Boolean &amp; Conditional Statement &gt; \uc9c0\uae08\uae4c\uc9c0 \uc0b4\ud3b4\ubcf8 \uc815\uc218, \uc2e4\uc218 \ubc0f 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