{"id":716,"date":"2017-02-02T22:22:17","date_gmt":"2017-02-02T13:22:17","guid":{"rendered":"http:\/\/www.uturtle.com\/blog\/?p=716"},"modified":"2017-02-02T22:22:17","modified_gmt":"2017-02-02T13:22:17","slug":"%eb%b2%88%ec%97%ad-%ed%85%8c%ec%8a%a4%ed%8a%b8%ea%b0%80-%ec%9e%98-%ec%95%88%eb%90%98%eb%8a%94-%ed%94%84%eb%a1%9c%ec%a0%9d%ed%8a%b8%ec%97%90-%eb%93%9c%eb%a6%ac%eb%8a%94-%ed%85%8c%ec%8a%a4%ed%8a%b8","status":"publish","type":"post","link":"https:\/\/www.jinukbaek.com\/blog\/ko\/archives\/716","title":{"rendered":"[\ubc88\uc5ed] \ud14c\uc2a4\ud2b8\uac00 \uc798 \uc548\ub418\ub294 \ud504\ub85c\uc81d\ud2b8\uc5d0 \ub4dc\ub9ac\ub294 \ud14c\uc2a4\ud2b8\uc5d0 \ub300\ud55c \uc62c\ubc14\ub978 \uc0ac\uace0\ubc29\uc2dd"},"content":{"rendered":"<blockquote><p>\uc774 \uae00\uc740 Qitta\uc758 geshi\ub2d8\uc774 \uc791\uc131\ud55c <a href=\"http:\/\/qiita.com\/geshi\/items\/74ed21615e1ba2ad539d\">\u30c6\u30b9\u30c8\u304c\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u6367\u3050\u3001\u6b63\u3057\u3044\u30c6\u30b9\u30c8\u306e\u8003\u3048\u65b9, 2016\ub144 3\uc6d4 9\uc77c \uac31\uc2e0<\/a> \uae00\uc744 \ubc88\uc5ed\ud55c \uac83\uc785\ub2c8\ub2e4.<\/p><\/blockquote>\n<h1 id=\"toc_0\">\uc774 \uae00\uc758 \ub300\uc0c1\uc790<\/h1>\n<ul>\n<li>\ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \ud14c\uc2a4\ud2b8\ub97c \uc791\uc131\ud558\uace0 \uc788\ub2e4. (\uc791\uc131\ud55c \uc801\uc774 \uc788\uc74c)<\/li>\n<li>\ud14c\uc2a4\ud2b8\uac00 \uc911\uc694\ud558\ub2e4\ub294 \uac83\uc740 \uc54c\uace0 \uc788\uc9c0\ub9cc \ud14c\uc2a4\ud2b8\uc758 \ub355\uc744 \uc81c\ub300\ub85c \uc2e4\uac10\ud55c \uc801\uc774 \uc5c6\ub2e4.<\/li>\n<li>\uacb0\uad6d \uc218\ub3d9 \ud14c\uc2a4\ud2b8\uc5d0 \uc758\uc874\ud574 \ubc84\uadf8\ub97c \uace0\uce58\uace0 \uc788\ub2e4.<\/li>\n<\/ul>\n<h1 id=\"toc_1\">\uc2dc\uc791\ud558\uba74\uc11c<\/h1>\n<p>\uc800\ub294 \ud14c\uc2a4\ud2b8\uc758 \uc124\uacc4\ubc29\ubc95\uacfc \uad6c\ud604\uc5d0 \uad00\ud55c \uc9c0\uc2dd\uc740 \ub9ce\uc774 \uc9c0\ub2c8\uace0 \uc788\uc5c8\uc9c0\ub9cc \uc798 \ubab0\ub790\ub358 \uac83\uc740 \ud14c\uc2a4\ud2b8\uc5d0 \ub300\ud55c \uc0ac\uace0\ubc29\uc2dd\uc774\uc600\uc2b5\ub2c8\ub2e4.<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"719\" data-permalink=\"https:\/\/www.jinukbaek.com\/blog\/ko\/archives\/716\/thinking_test\" data-orig-file=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?fit=1640%2C880&amp;ssl=1\" data-orig-size=\"1640,880\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"thinking_test\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?fit=640%2C343&amp;ssl=1\" class=\"alignnone size-large wp-image-719\" src=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?resize=640%2C343&#038;ssl=1\" alt=\"\" width=\"640\" height=\"343\" srcset=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?resize=1024%2C549&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?resize=300%2C161&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?resize=768%2C412&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?w=1640&amp;ssl=1 1640w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/thinking_test.png?w=1280&amp;ssl=1 1280w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<p>\ud14c\uc2a4\ud2b8\uc758 \uc911\uc694\uc131\uc5d0 \ub300\ud574\uc11c \uc54c\uace0 \uc788\ub294 \uc0ac\ub78c\uc740 \ub9ce\uc774 \uc788\uc744 \uac83\uc774\ub77c \uc0dd\uac01\ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc2e4\uc81c\ub85c \ud14c\uc2a4\ud2b8\uc758 \ub355\uc744 \ubcf4\uc9c0 \ubabb\ud558\uace0 \uc788\ub294 \uc0ac\ub78c\ub3c4 \uc788\uc744 \uac83\uc774\ub77c \uc0dd\uac01\ud569\ub2c8\ub2e4.<br \/>\n\uc0ac\uc2e4, <strong><em>\ud14c\uc2a4\ud2b8\uac00 \uc911\uc694\ud558\ub2e4\uace0 \ub9d0\ub85c\ub9cc \ud558\ub294 \uc0ac\ub78c<\/em><\/strong> \uacfc <strong><em>\ud14c\uc2a4\ud2b8\uc758 \uc911\uc694\uc131\uc744 \uc54c\uace0 \uc788\ub294 \uc0ac\ub78c<\/em><\/strong> \uc774 \uc788\uc2b5\ub2c8\ub2e4. \ud6c4\uc790\uc758 \uacbd\uc6b0, \uc77c\ub2e8\uc740 \ud14c\uc2a4\ud2b8\ub97c \uc791\uc131\ud558\ub294 \uac83\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc, \ud14c\uc2a4\ud2b8\uc5d0 \uc2dc\uac04\uc744 \ud560\uc560\ud558\uba74 \ud560\uc560\ud560 \uc218\ub85d \ucd5c\uc885\uc801\uc73c\ub85c\ub294 \uc218\ub3d9 \ud14c\uc2a4\ud2b8\uc5d0\uc11c \ubc84\uadf8\ub97c \ubc1c\uacac\ud558\ub294 \uac83\uc5d0 \uc758\uc874\ud558\uace0 \uc788\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc744 \uac83\uc774\ub77c \uc0dd\uac01\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc138\uac04\uc5d0\uc11c\ub294 &#8220;\ud14c\uc2a4\ud2b8\ub97c \uc791\uc131\ud558\ub294 \uac83\uc774 \ub2f9\uc5f0\ud558\uace0 \ud14c\uc2a4\ud2b8\ub294 \uc911\uc694\ud574!&#8221;\ub77c\ub294 \ud48d\uc870\uc5d0 \uc788\ub294\ub370 \uc65c \ud14c\uc2a4\ud2b8\uac00 \uc911\uc694\ud55c \uac83\uc774\ub77c\uace0 \uc2e4\uac10\uc740 \ud560 \uc218 \uc5c6\ub294 \uac83\uc77c\uae4c\uc694?? \uc5b4\ub5bb\uac8c \ud574\uc57c\ub9cc \ud14c\uc2a4\ud2b8\uac00 \uc720\ud6a8\ud558\uac8c \ud65c\uc6a9\ub418\uace0 \uc788\ub294 \ud504\ub85c\uc81d\ud2b8\uac00 \ub420 \uc218 \uc788\ub294 \uac83\uc77c\uae4c\uc694?<\/p>\n<p>\uc774\ubc88\uc758 \uae30\uc0ac\uc5d0\uc11c\ub294 \uadf8\ub7ec\ud55c \ubb38\uc81c\uc5d0 \ub300\ud558\uc5ec \uc794\uc7ac\uc8fc\uac00 \uc544\ub2c8\ub77c \uc2e4\uc804\uc5d0\uc11c &#8220;\uc5b4\ub5bb\uac8c \uc0ac\uace0\ud558\ub294\uac00?&#8221;\ub77c\ub294 \uc0ac\uace0\ud68c\ub85c\ub97c \uc124\uba85\ud558\uace0 \uc2f6\ub2e4\uace0 \uc0dd\uac01\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc608\ub97c \ub4e4\uba74, \uc774\ud558\uc640 \uac19\uc740 \ucf00\uc774\uc2a4\ub97c \uc0dd\uac01\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2 id=\"toc_2\">\ucf00\uc774\uc2a4 \uc2a4\ud130\ub514<\/h2>\n<pre class=\"lang:ruby decode:true\"><code>class SampleController\r\n  def index\r\n    # do something\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\uc774 \uc561\uc158 \uc548\uc5d0\uc11c\ub294 A,B,C,D,E,F,G,H,I,J\ub77c\ub294 10\uac1c\uc758 \uba54\uc18c\ub4dc\uac00 \ud638\ucd9c\ub418\uc5b4, \uac01\uac01(0, 1)\uc744 \ub9ac\ud134\ud558\uace0 1024\uac00\uc9c0\uc758 \ud589\ub3d9\uac70\uc9c0\uac00 \uc874\uc7ac\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc5ec\uae30\uc11c, \uc544\ub798\uc758 \uc0c1\ud0dc\uc77c \uacbd\uc6b0\uc5d0\ub294 \uc815\uc0c1\uc778 \ud589\ub3d9\uac70\uc9c0\ub97c \ud558\uc9c0 \ubabb\ud55c\ub2e4\ub294 \ub808\ud3ec\ud2b8\uac00 \uc62c\ub77c\uc654\uc2b5\ub2c8\ub2e4.<\/p>\n<h3 id=\"toc_3\">\ub808\ud3ec\ud2b8 1<\/h3>\n<pre class=\"decode:true\"><code>A -&gt; 0\r\nB -&gt; 1\r\nC -&gt; null\r\nD -&gt; 1\r\nE -&gt; 1\r\nF -&gt; 1\r\nG -&gt; 0\r\nH -&gt; 0\r\nI -&gt; 0\r\nJ -&gt; - 2\r\n<\/code><\/pre>\n<h3 id=\"toc_4\">\ub808\ud3ec\ud2b8 2<\/h3>\n<pre class=\"decode:true\"><code>A -&gt; 0\r\nB -&gt; 1\r\nC -&gt; 0\r\nD -&gt; 1\r\nE -&gt; 1\r\nF -&gt; 1\r\nG -&gt; 0\r\nH -&gt; 0\r\nI -&gt; 0\r\nJ -&gt; 1\r\n<\/code><\/pre>\n<p>\ubc84\uadf8\uac00 \uc7ac\ubc1c\ub418\uc9c0 \uc54a\ub3c4\ub85d \ud558\uae30 \uc704\ud574\uc11c\ub294 \uc5b4\ub5a4 \ud14c\uc2a4\ud2b8\ub97c \ud574\uc57c\ub9cc \ud558\ub294 \uac78\uae4c\uc694??<\/p>\n<p>\uc5ec\uae30\uc11c, \uc720\ub2db\ud14c\uc2a4\ud2b8\ub9cc\uc744 \uc791\uc131\ud558\ub294 \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c\ub294 \ub808\ud3ec\ud2b81\uc758 \ubc84\uadf8\ub97c \ub9c9\ub294 \uac83\uc740 \uac00\ub2a5\ud574\ub3c4 \ub808\ud3ec\ud2b8 2\uc758 \ubc84\uadf8\ub97c \ub9c9\ub294 \uac83\uc740 \uc5b4\ub824\uc6b4 \uacbd\uc6b0\uac00 \uc788\uaca0\uc9c0\uc694.<br \/>\n\uc774 \ucf00\uc774\uc2a4\ub97c \uae30\ubcf8\uc73c\ub85c \ud558\uc5ec &#8220;\uc5b4\ub5a4 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub97c \uc791\uc131\ud574\uc57c\ub9cc \ud560\uae4c\uc694?&#8221;\ub77c\ub294 \ubd80\ubd84\uc5d0 \ub300\ud574 \uc124\uba85\ud574 \ubcf4\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h1 id=\"toc_5\">\uc804\uc81c<\/h1>\n<p>\uac11\uc791\uc2a4\ub7fd\uac8c \ubc29\ubc95\ub860\uc73c\ub85c \ub4e4\uc5b4\uac00\ub294 \uac83\uc774 \uc544\ub2c8\ub77c &#8220;\uc560\ucd08\uc5d0 \ud14c\uc2a4\ud2b8\uc758 \ubaa9\uc801\uc740 \ubb34\uc5c7\uc778\uac00?&#8221;, &#8220;\uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\ub780 \ubb34\uc5c7\uc778\uac00?&#8221;, &#8220;\uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\uc758 \ubb38\uc81c\uc810\uc740 \ubb34\uc5c7\uc778\uac00?&#8221;\ub77c\ub294 \uc810\uc5d0 \ub300\ud574 \ud574\uc11d\uc744 \ud1b5\uc77c\ud558\uace0 \uc2f6\uc2b5\ub2c8\ub2e4.<\/p>\n<ul>\n<li>\ud14c\uc2a4\ud2b8\uc758 \ubaa9\uc801<\/li>\n<li>\ubc84\uadf8\ub97c \ub9c9\ub294\ub370 \uc5b4\ub5bb\uac8c \ud558\ub294\uac8c \uc801\uc808\ud560\uae4c?<\/li>\n<li>\uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\ub780?<\/li>\n<li>\uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\uc758 \ubb38\uc81c\uc810<\/li>\n<\/ul>\n<h2 id=\"toc_6\">\ud14c\uc2a4\ud2b8\uc758 \ubaa9\uc801<\/h2>\n<p>\ud14c\uc2a4\ud2b8\uc758 \ubaa9\uc801\uc740<\/p>\n<ol>\n<li>\ubc84\uadf8\ub97c \ubc1c\uacac\ud558\ub294 \uac83<\/li>\n<li>\ud488\uc9c8\uc744 \ubcf4\uc99d\ud558\ub294 \uac83<\/li>\n<li>\ud488\uc9c8\uc744 \uac1c\uc120\ud558\ub294 \uac83<\/li>\n<\/ol>\n<p>\uc774\ub77c\uace0 \uc54c\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uc911\uc5d0 \uac00\uc7a5 \uc911\uc694\ud55c \ubaa9\uc801\uc740 <strong><em>1. \ubc84\uadf8\ub97c \ubc1c\uacac<\/em><\/strong> \ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<br \/>\n\uc989, \uadf9\ub2e8\uc801\uc73c\ub85c \ub9d0\ud558\uba74 \ubc84\uadf8\uac00 \uc5c6\ub294 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \uc774\uc0c1\uc801\uc778 \uac83\uc774\uba70, \uadf8 \uc774\uc0c1\uc758 \uadfc\uccd0\ub85c \ub2e4\uac00\uac00\uae30 \uc704\ud574 \uc88b\uc740 \uc218\ub2e8 \uc911\uc758 \ud558\ub098\uac00 \ud14c\uc2a4\ud2b8\ub77c\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<h2 id=\"toc_7\">\ubc84\uadf8\ub97c \ub9c9\uae30 \uc704\ud574\uc11c\ub294 \uc5b4\ub5bb\uac8c \ud574\uc57c\ud558\ub098?<\/h2>\n<p>\uc0ac\uc591(\ucd5c\uc885 \uad6c\uc870\/\ub514\uc790\uc778), \ud504\ub85c\uadf8\ub7a8 \uc124\uacc4, \ud14c\uc2a4\ud2b8\ub77c\uace0 \ud558\ub294 \uc138\uac00\uc9c0\uc758 \uc601\uc5ed\uc73c\ub85c \ub098\ub220\uc838 \uc788\ub2e4\uace0 \uc0dd\uac01\ud569\ub2c8\ub2e4.<br \/>\n\uc0ac\uc591, \ud504\ub85c\uadf8\ub7a8 \uc124\uacc4\uac00 \ub098\uc058\ub2e4\uba74 \ud14c\uc2a4\ud2b8\ub3c4 \ud798\ub4e4\uc5b4\uc9c8 \uac83\uc785\ub2c8\ub2e4.<br \/>\n\uadf8\ub807\uae30 \ub54c\ubb38\uc5d0 \uc2a4\ud30c\uac8c\ud2f0\ucf54\ub4dc\ub294 \ub9ac\ud329\ud1a0\ub9c1\ud558\uace0 \ub098\uc11c \ud14c\uc2a4\ud2b8\ud574 \uc8fc\uc2ed\uc2dc\uc624.<br \/>\n\ud558\uc9c0\ub9cc, \uc774\ubc88\uc740 \ud14c\uc2a4\ud2b8\uc5d0 \ub300\ud55c \uc774\uc57c\uae30 \uc785\ub2c8\ub2e4.<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/reasons_of_bugs.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"721\" data-permalink=\"https:\/\/www.jinukbaek.com\/blog\/ko\/archives\/716\/reasons_of_bugs\" data-orig-file=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/reasons_of_bugs.png?fit=851%2C643&amp;ssl=1\" data-orig-size=\"851,643\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"reasons_of_bugs\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/reasons_of_bugs.png?fit=640%2C484&amp;ssl=1\" class=\"alignnone size-full wp-image-721\" src=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/reasons_of_bugs.png?resize=640%2C484&#038;ssl=1\" alt=\"\" width=\"640\" height=\"484\" srcset=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/reasons_of_bugs.png?w=851&amp;ssl=1 851w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/reasons_of_bugs.png?resize=300%2C227&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/reasons_of_bugs.png?resize=768%2C580&amp;ssl=1 768w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<h2 id=\"toc_8\">\uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\ub780?<\/h2>\n<p>\uadf8\ub7ec\uba74, \uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\ub780 \uc5b4\ub5a4 \ud14c\uc2a4\ud2b8\uc778 \uac78\uae4c\uc694?<br \/>\n\uadf8\uac83\uc740 <strong><em>\ubaa8\ub4e0 \uc720\uc2a4\ucf00\uc774\uc2a4\uac00 \uc815\uc0c1\uc801\uc73c\ub85c \ub3d9\uc791\ud558\ub294 \uac83<\/em><\/strong> \uc744 \uc99d\uba85\ud558\ub294 \ud14c\uc2a4\ud2b8\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc989 100\uac00\uc9c0\uc758 \uc0ac\uc6a9\ubc29\ubc95\uc774 \uc788\ub2e4\uba74 100\uac00\uc9c0\uc758 \uc751\ub2f5\uc774 \uc62c\ubc14\ub978\uc9c0 \uc5b4\ub5a4\uc9c0 \ud14c\uc2a4\ud2b8\ud55c\ub2e4\uba74 \uc644\ubcbd\ud558\uac8c \ubc84\uadf8\ub97c \ubc1c\uacac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n\uc55e\uc11c\uc758 \ucf00\uc774\uc2a4\ub97c \uc774\uc6a9\ud574 \uc124\uba85\ud574\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h3 id=\"toc_9\">\ucf00\uc774\uc2a4 \uc2a4\ud130\ub514<\/h3>\n<pre class=\"lang:ruby decode:true\"><code>class SampleController\r\n  def index\r\n    # do something\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\uc774 \uc561\uc158 \uc911\uc5d0\ub294 A,B,C,D,E,F,G,H,I,J\ub77c\uace0 \ud558\ub294 10\uac1c\uc758 \uba54\uc18c\ub4dc\uac00 \ud638\ucd9c \ub418\uc5b4 1024\uac00\uc9c0\uc758 \uc720\uc2a4\ucf00\uc774\uc2a4\uac00 \uc874\uc7ac\ud569\ub2c8\ub2e4.<br \/>\n\ub610\ud55c, \uc774\ub7f0\uc800\ub7f0 \uba54\uc18c\ub4dc\ub294 \ubaa8\ub450 (0, 1)\uc744 \ub9ac\ud134\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc5ec\uae30\uc11c \uc544\ub798\uc758 \uc0c1\ud0dc\uc77c \ub54c \ubc84\uadf8\uac00 \ubc1c\uc0dd\ud55c\ub2e4\ub294 \ub808\ud3ec\ud2b8\uac00 \uc62c\ub77c\uc654\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"decode:true\"><code>A -&gt; 0\r\nB -&gt; 1\r\nC -&gt; 0\r\nD -&gt; 1\r\nE -&gt; 1\r\nF -&gt; 1\r\nG -&gt; 0\r\nH -&gt; 0\r\nI -&gt; 0\r\nJ -&gt; 1\r\n<\/code><\/pre>\n<h3 id=\"toc_10\">\ud68c\ub2f5 (\uc774\uc0c1\uc801\uc778 \uacbd\uc6b0)<\/h3>\n<p>\uc77c\ub2e8, \uc870\ud569\uc5d0 \ub530\ub77c\uc11c \ubc84\uadf8\uac00 \ubc1c\uc0dd\ud558\uace0 \uc788\ub294 \uac83\uc778\uac00, \uac1c\ubcc4 \uba54\uc18c\ub4dc\uac00 \ubc84\uadf8\ub97c \ubc1c\uc0dd\uc2dc\ud0a4\uace0 \uc788\ub294 \uac83\uc778\uac00 \uc54c\uc9c0 \ubabb\ud569\ub2c8\ub2e4.<br \/>\n\ud558\uc9c0\ub9cc \uc774\ubc88\uc5d0\ub294 \uadf8\ub807\uac8c \ub41c \uc0c1\ud669\uc744 \ubb34\uc2dc\ud558\uace0 \uc774\uc0c1\uc801\uc778 \uc785\uc7a5\uc5d0\uc11c \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub97c \uc0dd\uac01\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc774\uc0c1\uc801\uc778 \uc785\uc7a5\uc5d0\uc11c\ub294 \ubaa8\ub4e0 \uc870\ud569\uc774 \uc815\uc0c1\uc801\uc778\uc9c0 \ud14c\uc2a4\ud2b8\ud569\ub2c8\ub2e4.<br \/>\n\uc989, 2 ^ 10 = 1024\uac00\uc9c0\uc758 \ud14c\uc2a4\ud2b8\ub97c \ud55c\ub2e4\uba74 \ubc84\uadf8\uac00 \uc644\ubcbd\ud558\uac8c \ubc1c\uacac\ub418\ub294 \uac83\uc774 \uac00\ub2a5\ud560 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<h2 id=\"toc_11\">\uc774\uc0c1\uc801\uc778 \uacbd\uc6b0\uc758 \ubb38\uc81c\uc810<\/h2>\n<p>\uc720\uc2a4\ucf00\uc774\uc2a4\uac00 1024\uac00\uc9c0\uac00 \uc788\ub294 \uae30\ub2a5\uc774\ub77c\ub294 \uac83\uc740 \ubb34\uc2a8 \uad34\ubb3c\uc778\uac00 \uc2f6\uc2b5\ub2c8\ub2e4\ub9cc, \ud604\uc2e4\uc801\uc73c\ub85c\ub294 \ubcf4\ud1b5\uc758 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ud558\ub098\uc758 \uc561\uc158(\uae30\ub2a5)\uc5d0 \ub300\ud558\uc5ec 100\uac00\uc9c0\uc758 \ud14c\uc2a4\ud2b8\ub97c \ud558\ub294 \uac83\uc740 \ubd88\uac00\ub2a5\ud569\ub2c8\ub2e4. \ub610\ud55c \ubcf5\uc218\uc758 \uc561\uc158(\uae30\ub2a5)\uc774 \uacb0\ud569\ud574\uac04\ub2e4\uba74 \ubb34\ud55c\uc758 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uac00 \ud544\uc694\ud558\uac8c \ub429\ub2c8\ub2e4. \uc5ec\uae30\uc11c \ubb38\uc81c\uc810\uc740 \ubaa8\ub4e0 \uc720\uc2a4\ucf00\uc774\uc2a4\ub97c \ud14c\uc2a4\ud2b8\ud558\ub294 \uac83\uc740 \uacf5\uc218\uc801\uc73c\ub85c \ubd88\uac00\ub2a5\ud558\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4.(\ub2f9\uc5f0\ud55c \ub9d0\uc785\ub2c8\ub2e4\ub9cc..)<\/p>\n<h1 id=\"toc_12\">\ud604\uc2e4\uc801\uc778 \ud14c\uc2a4\ud2b8 \uc124\uacc4 \ubc29\ubc95<\/h1>\n<p>\uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\ub97c \ubaa9\ud45c\ub85c \ud558\uba74 \ud560 \uc218\ub85d \uc9c0\uc218\ud568\uc218\uc801\uc73c\ub85c \uacf5\uc218\uac00 \ub298\uc5b4\ub0a9\ub2c8\ub2e4.<br \/>\n\uadf8\ub807\uae30 \ub54c\ubb38\uc5d0 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ud14c\uc2a4\ud2b8\uc758 \uc138\uacc4\uc5d0\uc11c\ub294<br \/>\n<strong><em>\uc5bc\ub9c8\ub098 \ube44\uc6a9\ub300\ube44\uc774\ub4dd\uc774 \ub192\uc740 \ud14c\uc2a4\ud2b8\ub97c \uc791\uc131\ud558\ub294 \uac83\uc774 \uac00\ub2a5\ud55c\uac00?<\/em><\/strong><br \/>\n\ub77c\ub294 \uac83\uc774 \uba85\uc81c\uac00 \ub418\uc5b4 \uc654\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uadf8\ub807\ub2e4\uba74 \ube44\uc6a9\ub300\ube44\uc774\ub4dd\uc774 \ub192\uc740 \ud14c\uc2a4\ud2b8\ub294 \uc5b4\ub5bb\uac8c\ud558\uba74 \uc791\uc131\ud560 \uc218 \uc788\uc744\uae4c\uc694?<br \/>\n\uadf8\uac83\uc740 <strong><em>\ubc84\uadf8\uac00 \ubc1c\uc0dd\ud558\uae30 \uc26c\uc6b4 \ucf54\ub4dc\uc5d0 \ub300\ud558\uc5ec \uc81c\ub300\ub85c \ud14c\uc2a4\ud2b8 \ucf54\ub4dc\ub97c \uc791\uc131\ud558\ub294 \uac83<\/em><\/strong> \uc785\ub2c8\ub2e4.<br \/>\n\uac70\uafb8\ub85c \ub9d0\ud558\uba74, <strong><em>\uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\ub85c\ubd80\ud130 \uc911\uc694\ud558\uc9c0 \uc54a\uc740 \uc870\uac74\uc744 \uc18e\uc544\ub0b4\ub294<\/em><\/strong> \uac83\uc785\ub2c8\ub2e4.<br \/>\n\uadf8\ub807\ub2e4\uba74 \uc9c0\uae08\ubd80\ud130 \uc5b4\ub5bb\uac8c \uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\ucf00\uc774\uc2a4\ub85c\ubd80\ud130 \ud604\uc2e4\uc801\uc778 \ub808\ubca8\ub85c \uc18e\uc544\ub0b4\uc5b4 \uac00\ub294\uc9c0 \uc138 \uac00\uc9c0 \ubc29\ubc95\uc744 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<ul>\n<li>\ubc29\ubc951 : \ub3c5\ub9bd\ub41c \uc694\uc18c\ub97c \uc18e\uc544\ub0b8\ub2e4.<\/li>\n<li>\ubc29\ubc952 : \uc911\uc694\ub3c4\uac00 \ub0ae\uc740 \ud328\ud134\uc740 \ud14c\uc2a4\ud2b8\ub97c \ud558\uc9c0 \uc54a\ub294\ub2e4.<\/li>\n<li>\ubc29\ubc953 : \ud1b5\uacc4\uc815\ubcf4\uc5d0 \uae30\ubc18\uc73c\ub85c\ud55c \uc870\ud569\uc73c\ub85c \uc881\ud78c\ub2e4.<\/li>\n<li>\uc694\uc57d<\/li>\n<\/ul>\n<h2 id=\"toc_13\">\ubc29\ubc951 : \ub3c5\ub9bd\ub41c \uc694\uc18c\ub97c \uc18e\uc544\ub0b8\ub2e4.<\/h2>\n<p>\uc774 \ubc29\ubc95\uc740 \ud14c\uc2a4\ud2b8\ub97c \ud604\uc2e4\uc801\uc73c\ub85c \ud558\ub294 \uac00\uc7a5 \ubca0\uc774\uc2a4\uac00 \ub418\ub294 \uc0ac\uace0\ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n<h3 id=\"toc_14\">\ucf00\uc774\uc2a4 \uc2a4\ud130\ub514<\/h3>\n<pre class=\"lang:ruby decode:true\"><code>class SampleController\r\n  def index\r\n    # do something\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\uc774 \uc561\uc158 \uc911\uc5d0\ub294 A,B,C,D,E,F,G,H,I,J\ub77c\ub294 10\uac00\uc9c0\uc758 \uba54\uc18c\ub4dc\uac00 \ud638\ucd9c\ub418\uc5b4 1024\uac00\uc9c0\uc758 \uc720\uc2a4\ucf00\uc774\uc2a4\uac00 \uc874\uc7ac\ud569\ub2c8\ub2e4.<br \/>\n\ub610\ud55c, \uac01\uac01\uc758 \uba54\uc18c\ub4dc\ub294 \ubaa8\ub450 (0, 1)\uc744 \ub9ac\ud134\ud569\ub2c8\ub2e4.<\/p>\n<pre class=\"decode:true\"><code>\uba85\uc81c1 : \u300c1024\uac00\uc9c0 \uc720\uc2a4\ucf00\uc774\uc2a4\ub294 \uc804\ubd80 \uc815\uc0c1\u300d \uc774\ub77c\uba74 \u300c10\uac1c\uc758 \uba54\uc18c\ub4dc\ub294 \uc804\ubd80 \uc815\uc0c1\u300d\r\n\uba85\uc81c2 : \u300c10\uac00\uc9c0 \uba54\uc18c\ub4dc\ub294 \ubaa8\ub450 \uc815\uc0c1\u300d\u3000\uc774\ub77c\uba74\u3000\u300c1024\uac00\uc9c0\uc758 \uc720\uc2a4\ucf00\uc774\uc2a4\ub294 \ubaa8\ub450 \uc815\uc0c1\u300d\r\n<\/code><\/pre>\n<p>\uba85\uc81c1\uacfc \uba85\uc81c2\ub294 \uac01\uac01 \ucc38\uacfc \uac70\uc9d3 \uc911 \uc5b4\ub290 \ucabd\uc77c \uc77c\uae4c\uc694?<\/p>\n<h3 id=\"toc_15\">\ud68c\ub2f5<\/h3>\n<p>\uba85\uc81c1\uc740 \ucc38, \uba85\uc81c2\ub294 \uac70\uc9d3\uc785\ub2c8\ub2e4. (\ud568\uc218\ud615\uc5b8\uc5b4\ub97c \uc0ac\uc6a9\ud558\uba74 \ud6c4\uc790\ub77c\ub3c4 \ucc38\uc774 \ub418\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud560 \uc218 \uc788\ub294 \ub4ef \ud569\ub2c8\ub2e4\ub9cc..)<\/p>\n<p>\uc804\uc790\ub294 2<sup>10<\/sup> = 1024\uac00\uc9c0\uc758 \ud14c\uc2a4\ud2b8\ub97c \ud560 \ud544\uc694\uac00 \uc788\uc73c\uba70,<br \/>\n\ud6c4\uc790\ub294 2*10 = 20\uac00\uc9c0\uc758 \ud14c\uc2a4\ud2b8\uac00 \uc870\uac74\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc704\uc758 \uba85\uc81c\ub294, <strong><em>\uc720\ub2db\ud14c\uc2a4\ud2b8\ub9cc\uc73c\ub85c \ubc84\uadf8\ub97c \ubc1c\uacac\ud558\uae30 \uc704\ud574\uc11c\ub294 \ubd88\ucda9\ubd84\ud558\ub2e4<\/em><\/strong> \ub294 \uac83\uc744 \uc99d\uba85\ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc2e4\uc81c\ub85c\ub294 \uc18e\uc544\ub0b4\ub294 \uac83 \ub9cc\uc73c\ub85c\ub3c4 \ucda9\ubd84\ud55c \uacbd\uc6b0\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc608\ub97c \ub4e4\uba74, 10\uac1c\uc758 \uba54\uc18c\ub4dc \uc548\uc5d0 D\uc640 H \uba54\uc18c\ub4dc\uac00 \uc644\uc804\ud788 \ub3c5\ub9bd\ud558\uc5ec \uc788\ub294(\ub2e4\ub978 \uba54\uc18c\ub4dc\uc5d0 \ub300\ud574 \uc601\ud5a5\uc744 \uc8fc\uc9c0 \uc54a\uc74c) \uacbd\uc6b0, D\uc640 H\ub294 0 \ub610\ub294 1\uc744 \ub9ac\ud134\ud558\ub294 \uac83\uc774 \uc99d\uba85\uc774 \ub418\uc5b4\uc788\ub294 \uac83 \ub9cc\uc73c\ub85c \ubb38\uc81c\uc5c6\uc2b5\ub2c8\ub2e4.<br \/>\n\ub610\ud55c, E\uc640 F\ub3c4 \uac01\uac01 \uc601\ud5a5\uc744 \ub07c\uce58\ub294 \uc2a4\ucf54\ud504\uac00 \uc881\uc544 \uc870\ud569 \ud14c\uc2a4\ud2b8\uc5d0 \ud544\uc694\uac00 \uc5c6\ub2e4\uace0 \ud310\ub2e8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc989, \uc720\uc2a4\ucf00\uc774\uc2a4\uc758 \uc9c0\uc218\ub294 10\uc5d0\uc11c 6\uc73c\ub85c \uc904\uc5b4\ub4e4\uc5b4 \uc720\ub2db\ud14c\uc2a4\ud2b8\uac00 4\uac1c \uc99d\uac00\ud569\ub2c8\ub2e4.<br \/>\n2 ^ 6 + 2 * 4 = 70\uac00\uc9c0<\/p>\n<p>\uc774\ub807\uac8c \ud574\uc11c \ub3c5\ub9bd\ud574 \uc788\ub294 \uc870\ud569\uc744 \uc18e\uc544\ub0b4 \uac11\ub2c8\ub2e4.<\/p>\n<h3 id=\"toc_16\">\ud3ec\uc778\ud2b8<\/h3>\n<p>\ub3c5\ub9bd\ud574 \uc788\ub294 \uba54\uc18c\ub4dc\ub294 \uc720\ub2db\ud14c\uc2a4\ud2b8\ub85c \ucda9\ubd84\ud558\uc5ec \uc870\ud569\uc758 \uc9c0\uc218\uac00 \uc904\uc5b4\ub4e0\ub2e4.<\/p>\n<h2 id=\"toc_17\">\ubc29\ubc952 : \uc911\uc694\ub3c4\uac00 \ub0ae\uc740 \ud328\ud134\uc740 \ud14c\uc2a4\ud2b8\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/h2>\n<p>\uc774\uac83\uc740 \uc774\ub860\uc801\uc73c\ub85c \uacb0\uc815\ud560 \uc218 \uc788\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. \ucf00\uc774\uc2a4 \ubc14\uc774 \ucf00\uc774\uc2a4\uc785\ub2c8\ub2e4\ub9cc \uc0ac\uace0\ubc29\ubc95\uc744 \uc54c\uace0 \uc788\ub294 \uac83\uc73c\ub85c \uc624\ucc28\ub294 \ud5c8\uc6a9\ub418\ub294 \ubc94\uc704\ub85c \ub4e4\uc5b4\uac00\uaca0\uc8e0.<\/p>\n<h3 id=\"toc_18\">\ucf00\uc774\uc2a4 \uc2a4\ud130\ub514<\/h3>\n<pre class=\"lang:ruby decode:true\"><code>class SampleController\r\n  def index\r\n    # do something\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\uc774 \uc561\uc158 \ub0b4\uc5d0\ub294 A,B,C,D,E,F,G,H,I,J\ub77c\ub294 10\uac1c\uc758 \uba54\uc18c\ub4dc\uac00 \ud638\ucd9c\ub418\uc5b4 1024\uac00\uc9c0\uc758 \uc720\uc2a4\ucf00\uc774\uc2a4\uac00 \uc874\uc7ac\ud569\ub2c8\ub2e4.<\/p>\n<p>\ub610\ud55c, A\ub77c\ub294 \uba54\uc18c\ub4dc\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc5d0\uc11c \uc81c\uacf5\ub418\uc5b4\uc788\ub294 \uc778\uc99d\uae30\ub2a5\uc785\ub2c8\ub2e4. \uc778\uc99d\ub41c \uacbd\uc6b0\uc5d0\ub294 1, \uc778\uc99d\ub418\uc9c0 \uc54a\ub294 \uacbd\uc6b0\ub294 0\uc744 \ub9ac\ud134\ud569\ub2c8\ub2e4.<br \/>\n\u307e\u305f\u3001A\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u30fc\u3067\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u8a8d\u8a3c\u6a5f\u80fd\u3067\u3059\u3002\u8a8d\u8a3c\u306e\u5834\u54081 \u8a8d\u8a3c\u3067\u306a\u3044\u5834\u54080\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\nF\ub77c\ub294 \uba54\uc18c\ub4dc\ub294 &#8216;red&#8217;, &#8216;green&#8217;\uc774\ub77c\ub294 \uac12\uc744 \ub9ac\ud134\ud558\uc5ec \ubc84\ud2bc\uc758 \uc0c9\uc744 \ubc14\uafc9\ub2c8\ub2e4.<br \/>\nH\ub77c\ub294 \uba54\uc18c\ub4dc\ub294 \uc0ac\uc6a9\uc790\uac00 \uc785\ub825\ud588\ub358 \uc815\ubcf4\ub85c\ubd80\ud130 \ud50c\ub79cA\uc624\ube0c\uc81d\ud2b8, \ud50c\ub79cB\uc624\ube0c\uc81d\ud2b8\ub97c \ub9ac\ud134\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc774 \uc911\uc5d0\ub294 \ud14c\uc2a4\ud2b8\ud558\ub294 \uac83\uc774 \uc88b\uc740 \ucf00\uc774\uc2a4\uc640 \ud14c\uc2a4\ud2b8\ud558\uc9c0 \uc54a\uc544\ub3c4 \ub418\ub294 \ucf00\uc774\uc2a4\ub77c\uace0 \ud558\ub294 \uc11c\uc5f4\uc774 \uc874\uc7ac\ud560 \ud130\uc785\ub2c8\ub2e4. \uadf8\ub807\ub2e4\uba74 \uc5b4\ub5bb\uac8c \ud14c\uc2a4\ud2b8\uc758 \uc6b0\uc120\uc21c\uc704\ub97c \uacb0\uc815\ud574\uc57c\ud558\ub294 \uac83\uc77c\uae4c\uc694??<\/p>\n<h2 id=\"toc_19\">\ud68c\ub2f5<\/h2>\n<p>(\uc911\uc694\ub3c4)\u3000\u00d7\u3000(\ubc84\uadf8\uc720\uc785\ub9ac\uc2a4\ud06c) \ub77c\ub294 \ub9e4\ud2b8\ub9ad\uc2a4\ub85c \ud310\ub2e8\ud569\ub2c8\ub2e4.<\/p>\n<p>\u203b <a href=\"http:\/\/itpro.nikkeibp.co.jp\/article\/COLUMN\/20070920\/282546\/?rt=nocnt\">\uc81c3\ud68c\uff1a\ud14c\uc2a4\ud2b8\ud56d\ubaa9\uc758 \ubc94\uc704 \ucd95\uc18c\uff1a\ubb34\uac8c\ub97c \uc81c\ub294 \uac83\uc740 \ud544\ud788 \uc218\uce58\ub85c \ud45c\ud604\ud558\uc790<\/a><br \/>\n\ub77c\uace0 \ud558\ub294 \uae30\uc0ac\uc5d0\uc11c \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \uc911\uc9c4\ubd84\ub4e4\uc774 \uc758\uacac\uc744 \uae30\uc220\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc911\uc694\ub3c4\ub77c\ub294 \uac83\uc740 \uc0ac\uc6a9\uc790\uc801\uc73c\ub85c \uc911\uc694, \uc601\ud5a5\ubc94\uc704\uac00 \ud070 \uac83 \ub4f1\uc758 \uc694\uc18c\uac00 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n\ubc84\uadf8\uc720\uc785\ub9ac\uc2a4\ud06c\ub780 \uc0ac\uc591\uc801\uc73c\ub85c \uc18c\uc2a4\ucf54\ub4dc\uc801\uc73c\ub85c \ubcf5\uc7a1\ud55c \uacf3\ud560 \uc218\ub85d \ucee4\uc9d1\ub2c8\ub2e4.(\uacb0\ud569\ub3c4\uac00 \ub192\uc740 \uacf3)<br \/>\n\ubc84\uadf8\uc720\uc785\ub9ac\uc2a4\ud06c\ub294 \ub9e4\ud2b8\ub9ad\uc2a4\ud574\uc11d\uc744 \ud558\uc5ec \uc5b4\ub290\uc815\ub3c4\ub294 \uc815\ub7c9\uc801\uc73c\ub85c \ud310\ub2e8\ud558\ub294 \uac83\uc774 \uac00\ub2a5\ud558\uae30\ub3c4 \ud569\ub2c8\ub2e4. (\ub9e4\ud2b8\ub9ad\uc2a4 \ud574\uc11d\uc5d0 \ub300\ud574\uc11c\ub294 \ucd94\ud6c4\uc5d0..)<\/p>\n<p>\uc989, \uc774\ubc88\uc758 \ucf00\uc774\uc2a4\ub77c\uba74 A\ub294 \uc2e0\uc6a9\ud560 \uc218 \uc788\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub85c \uc81c\uacf5\ub418\uae30 \ub54c\ubb38\uc5d0, \ubc84\uadf8\uac00 \ubc1c\uc0dd\ud560 \ub9ac\uc2a4\ud06c\ub294 \uc801\ub2e4.<br \/>\nF\uc601\ud5a5\ubc94\uc704\uac00 \uc881\uc544\uc9c0\uace0 \uc0ac\uc6a9\uc790\uc801\uc73c\ub85c\ub3c4 \uadf8\ub807\uac8c\uae4c\uc9c0 \uc911\uc694\ud558\uc9c4 \uc54a\ub2e4.<br \/>\nH\ub294 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uac00\uce58 \uadf8 \uc790\uccb4\ub85c\uc368 \ub85c\uc9c1\ub3c4 \ubcf5\uc7a1\ud558\ub2e4.<\/p>\n<p>\uc989<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/matrix_for_test.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"724\" data-permalink=\"https:\/\/www.jinukbaek.com\/blog\/ko\/archives\/716\/matrix_for_test\" data-orig-file=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/matrix_for_test.png?fit=1176%2C804&amp;ssl=1\" data-orig-size=\"1176,804\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"matrix_for_test\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/matrix_for_test.png?fit=640%2C438&amp;ssl=1\" class=\"alignnone size-large wp-image-724\" src=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/matrix_for_test.png?resize=640%2C437&#038;ssl=1\" alt=\"\" width=\"640\" height=\"437\" srcset=\"https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/matrix_for_test.png?resize=1024%2C700&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/matrix_for_test.png?resize=300%2C205&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/matrix_for_test.png?resize=768%2C525&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.jinukbaek.com\/blog\/wp-content\/uploads\/2017\/02\/matrix_for_test.png?w=1176&amp;ssl=1 1176w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<p>\uc774\ub7ec\ud55c \ub9e4\ud2b8\ub9ad\uc2a4\uac00 \ub418\uc5b4 A\ub294 \uc720\ub2db\ud14c\uc2a4\ud2b8\ub97c \ud560 \ud544\uc694\uac00 \uc5c6\uace0 F\ub294 \uc870\ud569 \ud328\ud134\uc5d0 \ub123\uc744 \ud544\uc694\uac00 \uc5c6\ub2e4\uace0 \ud310\ub2e8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3 id=\"toc_21\">\ud3ec\uc778\ud2b8<\/h3>\n<p>(\uc911\uc694\ub3c4)\u3000\u00d7\u3000(\ubc84\uadf8\uc720\uc785\ub9ac\uc2a4\ud06c)\ub97c \uace0\ub824\ud574 \uc720\ub2db\ud14c\uc2a4\ud2b8\uac00 \ud544\uc694\uc5c6\ub294 \ucf54\ub4dc, \uc870\ud569\uc758 \ud328\ud134\uc5d0 \ub123\uc744 \ud544\uc694\uac00 \uc5c6\ub294 \uac1c\uc18c\ub97c \uc18e\uc544\ub0b8\ub2e4.<\/p>\n<h2 id=\"toc_22\">\ubc29\ubc953 : \ud1b5\uacc4\uc815\ubcf4\uc5d0 \uae30\ubc18\ud55c \uc870\ud569\uc73c\ub85c \uc881\ud78c\ub2e4.<\/h2>\n<p>\uc5ec\uae30\uae4c\uc9c0 &#8220;\uc5b4\ub5a4 \ud14c\uc2a4\ud2b8\ucf00\uc774\uc2a4\ub97c \uc18e\uc544\ub0b4\ub294 \uac83\uc774 \uc88b\uc740\uac00?&#8221;\ub77c\uace0 \ud558\ub294 \ubca0\uc774\uc2a4\uac00 \ub418\ub294 \uc0ac\uace0\ubc29\uc2dd\uc744 \uc54c\uac8c \ub418\uc5c8\uc2b5\ub2c8\ub2e4.<br \/>\n\ud558\uc9c0\ub9cc \uc778\uac04\uc758 \ud798\uc73c\ub85c\ub294 \ud558\ub098\uc758 \uae30\ub2a5\uc5d0 \ub300\ud574\uc11c \uc218\uc2ed\uac1c\uc758 \ud14c\uc2a4\ud2b8\ucf00\uc774\uc2a4\uc870\ucc28 \ube61\uc0cc \uacf3\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n\uc5ec\uae30\uc11c \ud14c\uc2a4\ud2b8\uc5d4\uc9c0\ub2c8\uc5b4 \ubd84\ub4e4\uc740, &#8220;\uc5b4\ub5a4 \ub54c\uc5d0 \ubc84\uadf8\uac00 \ubc1c\uc0dd\ud558\ub294\uac00?&#8221;\ub77c\ub294 \uac83\uc744 \ud1b5\uacc4\uc815\ubcf4\ub77c\uace0 \ud558\uc600\uc2b5\ub2c8\ub2e4.<br \/>\n\uadf8\ub7ec\uc790 <strong><em>&#8220;2\ud30c\ub77c\uba54\ud130 \uc0ac\uc774\uae4c\uc9c0\ub85c \ubc1c\uc0dd\ud55c \uacb0\ud568\uc774 7~9\ud560\uc744 \ucc28\uc9c0\ud55c\ub2e4.&#8221;&#8221;<\/em><\/strong> \ub77c\uace0 \ud558\ub294 \ud1b5\uacc4\uacb0\uacfc\uac00 \ubc1c\uacac\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uc774 \ub370\uc774\ud130\ub97c \uae30\ucd08\ub85c \ud574\uc11c \uace0\ub824\ub41c \ud14c\uc2a4\ud2b8 \uc124\uacc4\ubc29\ubc95\uc774 <strong><em>\ud398\uc5b4\uc640\uc774\uc988\ubc95(pairwise)<\/em><\/strong> \ub77c\uace0 \ubd88\ub9ac\uc6b0\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n<h3 id=\"toc_23\">\ucf00\uc774\uc2a4 \uc2a4\ud130\ub514<\/h3>\n<pre class=\"lang:ruby decode:true\"><code>class SampleController\r\n  def index\r\n    # do something\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\uc774 \uc561\uc158 \uc911\uc5d0\ub294 A,B,C,D\ub77c\ub294 3\uac00\uc9c0\uc758 \uba54\uc18c\ub4dc\uac00 \ud638\ucd9c\ub418\uc5b4 8\uac00\uc9c0\uc758 \uc720\uc2a4\ucf00\uc774\uc2a4\uac00 \uc874\uc7ac\ud569\ub2c8\ub2e4.<\/p>\n<p>\ud398\uc5b4\uc640\uc774\uc988\ubc95\uc774\ub780 \uc544\ub798\uc640 \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<blockquote><p>\uc870\ud569\ud14c\uc2a4\ud2b8\uae30\ubc95\uc758 \ud55c\uac00\uc9c0\uc778 \uc62c\ud398\uc5b4(\ud398\uc5b4\uc640\uc774\uc988)\ubc95\uc5d0\uc11c\ub294, \ubaa8\ub4e0 \ud30c\ub77c\uba54\ud130\uc5d0 \ub300\ud558\uc5ec \uc801\uc5b4\ub3c4 2\ud30c\ub77c\ubbf8\ud130\uc0ac\uc774\uc5d0\uc11c\uc758 \uac12\uc758 \uc870\ud569\uc774 \ub9dd\ub77c\ub418\uc5b4\uc788\ub4ef\uc774 \ud14c\uc2a4\ud2b8\ud328\ud134\uc744 \uc791\uc131\ud569\ub2c8\ub2e4.<\/p><\/blockquote>\n<p><a href=\"http:\/\/d.hatena.ne.jp\/kgu\/20120219\/1329635956\">\uc62c\ud398\uc5b4(\ud398\uc5b4\uc640\uc774\uc988)\ubc95 (\uc77c\ubcf8\uc5b4)<\/a><\/p>\n<p>\ub77c\uace0 \uc801\ud600\uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc989, 2\uac1c\uc758 \uba54\uc18c\ub4dc\uc758 \uc870\ud569\uc774 \ubaa8\ub450 \ub9dd\ub77c\ub418\uc5b4\uc788\ub2e4\uba74 \ubb38\uc81c \uc5c6\uc2b5\ub2c8\ub2e4.<br \/>\n\uc608\ub97c \ub4e4\uba74 A,B,C,D\ub77c\uace0 \ud558\ub294 \uba54\uc18c\ub4dc\ub97c \ud398\uc5b4\uc640\uc774\uc988\ubc95\uc73c\ub85c \ud14c\uc2a4\ud2b8\ucf00\uc774\uc2a4\ub97c \uc0dd\uac01\ud574\ubcf4\uba74 \uc544\ub798\uc640 \uac19\uc774 \ub429\ub2c8\ub2e4.<\/p>\n<pre class=\"decode:true\"><code>A       B       C       D\r\n1       0       0       0\r\n1       1       1       1\r\n0       1       0       1\r\n0       0       1       1\r\n0       1       1       0\r\n<\/code><\/pre>\n<p>\ud398\uc5b4\uc640\uc774\uc988\ub97c \uc791\uc131\ud558\ub294 \ud234\uc774 \uc874\uc7ac\ud558\ub294 \ub4ef \ud558\uc5ec \uc774\ub97c \uc0ac\uc6a9\ud574 \ubcf4\ub294 \uac83\ub3c4 \uc88b\uc744\uc9c0\ub3c4 \ubaa8\ub974\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<p><a href=\"http:\/\/ameblo.jp\/pictmaster\/\">\uc870\ud569\ud14c\uc2a4\ud2b8\ucf00\uc774\uc2a4 \uc0dd\uc131\ud234 PictMaster\uc640 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ud14c\uc2a4\ud2b8\uc758 \ud654\uc81c(\uc77c\ubcf8\uc5b4)<\/a><\/p>\n<h2 id=\"toc_24\">\uc694\uc57d<\/h2>\n<p>\ubc29\ubc951, \ub3c5\ub9bd\ud574\uc788\ub294 \ud328\ud134\uc744 \ucc3e\uc544\ubd05\uc2dc\ub2e4.<br \/>\n\ubc29\ubc952, \uc815\ub9d0\ub85c \ud14c\uc2a4\ud2b8\ud574\uc57c\ub9cc \ud558\ub294\uc9c0 \ub9e4\ud2b8\ub9ad\uc2a4\ub85c \uc0dd\uac01\ud574\ubd05\uc2dc\ub2e4.<br \/>\n\ubc29\ubc953, \ud604\uba85\ud558\uac8c \ud1b5\uacc4\uc815\ubcf4\uc5d0 \uae30\ubc18\uc73c\ub85c\ud574 \uc870\ud569\uc758 \uc218\ub97c \uc904\uc5ec\ubd05\uc2dc\ub2e4.<\/p>\n<p>\uadf8\ub807\uac8c \ud55c\ub2e4\uba74 \ud604\uc2e4\uc801\uc778 \uc870\ud569\uc774 \ub420 \uac70\ub77c\uace0 \uc0dd\uac01\ud569\ub2c8\ub2e4.<\/p>\n<h1 id=\"toc_25\">\uc704\uc758 \uc2e4\ucc9c\uc73c\ub85c \ud14c\uc2a4\ud2b8\ub97c \uc791\uc131\ud560 \ub54c\uc5d0 \uc54c\uc544\ub454\ub2e4\uba74 \uc88b\uc740 \uc9c0\uc2dd<\/h1>\n<p>\uc774\uc0c1\uc73c\ub85c \ubca0\uc774\uc2a4\uac00 \ub418\ub294 \uc0ac\uace0\ubc29\uc2dd\uc744 \ubab8\uc5d0 \uc775\ud788\ub294 \uac83\uc774 \uac00\ub2a5\ud558\uc600\uc2b5\ub2c8\ub2e4.<br \/>\n\ud558\uc9c0\ub9cc \uc9c0\uae08\uae4c\uc9c0\uc758 \ucf00\uc774\uc2a4\ub294 \uc5b4\ub290\uc815\ub3c4 \uc774\uc0c1\ud654\ub41c \ubaa8\ub378\uc744 \ubca0\uc774\uc2a4\ub85c \ud588\ub358 \ucf00\uc774\uc2a4 \uc2a4\ud130\ub514\uc785\ub2c8\ub2e4.<br \/>\n\uc9c0\uae08\uae4c\uc9c0\uc758 \ucf00\uc774\uc2a4\ub85c\ub294 \uc870\ud569\uc774 \ub9e4\uc6b0 \uba85\ud655\ud588\uc2b5\ub2c8\ub2e4.<br \/>\n\ud558\uc9c0\ub9cc \ud604\uc7a5\uc758 \ucf54\ub4dc\uc5d0\uc11c\ub294 \uc870\ud569\uc758 \uc218\ub294 \uc0ac\ub78c\uc5d0 \ub530\ub77c\uc11c \ub2e4\ub974\ub2e4\ub294 \uac83\uc774 \ubc1c\uacac\ub418\uae30\ub3c4 \ud569\ub2c8\ub2e4.<br \/>\n\ub610\ud55c \uc0ac\ub78c\uc5d0 \ub530\ub77c\uc11c &#8220;\uc5b4\ub5a4 \ucf54\ub4dc\uc5d0 \ubc84\uadf8\uac00 \uc228\uc5b4 \uc788\ub294\uac00?&#8221;\ub77c\ub294 \ud574\uc11d\uc5d0\ub3c4 \uc774\uacac\uc774 \uc0dd\uaca8\ub0a0 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<p>\uadf8\ub807\ub2e4\ud574\ub3c4 \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \uac1c\ubc1c\ud560 \ub54c\ub294 \uac00\ub2a5\ud55c\ud55c \uacf5\ud1b5\uc758 \uc778\uc2dd\uc744 \uc9c0\ub2d0 \uac83\uc785\ub2c8\ub2e4.<br \/>\n\uac70\uae30\uc11c \uc774\ud558\uc758 \ud56d\ubaa9\uc5d0 \ub300\ud55c \uc9c0\uc2dd\uc758 \uc124\uba85\uc744 \ud558\uace0 \uc2f6\uc2b5\ub2c8\ub2e4.(\uc54c\uace0\uc788\ub294 \ud56d\ubaa9\uc774\ub77c\uba74 \ub118\uc5b4\uac00\uc8fc\uc138\uc694.)<\/p>\n<ul>\n<li>\ucee4\ubc84\ub9ac\uc9c0\uc728<\/li>\n<li>\ub3d9\uce58\ubd84\ud560\uacfc \uacbd\uacc4\uac12\ubd84\uc11d<\/li>\n<li>\ub9e4\ud2b8\ub9ad\uc2a4 \ud574\uc11d<\/li>\n<\/ul>\n<p>\ucee4\ubc84\ub9ac\uc9c0\uc728\uc774\ub780 \uacbd\ub85c\uc758 \uc870\ud569\uc744 \uc138\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<br \/>\n\ub3d9\uce58\ubd84\ud560\uacfc \uacbd\uacc4\uac12\ubd84\uc11d\uc774\ub780 \uac12\uc758 \ud328\ud134\uc744 \ucd94\ucd9c\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<br \/>\n\ub9e4\ud2b8\ub9ad\uc2a4 \ud574\uc11d\uc774\ub780 \uc774\ub7f0\uc800\ub7f0 \ucf54\ub4dc\uc5d0 \ubc84\uadf8\uac00 \uc228\uc5b4\uc788\ub294\uc9c0\ub97c \uc815\ub7c9\uc801\uc73c\ub85c \uce21\uc815\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc774\uac83\uc744 \uae30\uc5b5\ud558\ub294 \uac83\uc73c\ub85c \uc5b4\ub290\uc815\ub3c4 \ud504\ub85c\uc81d\ud2b8\uac04\uc5d0 \uc870\ud569\uc120\ud0dd\uc758 \ubd88\uade0\ud615\uc774\ub098 \uc6b0\uc120\uc21c\uc704\uc758 \ubd88\uaddc\uce59\uc131\uc774 \uc5c6\uc5b4\uc9c8 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<h2 id=\"toc_26\">\ucee4\ubc84\ub9ac\uc9c0\uc728\uc774\ub780?<\/h2>\n<p>\ud504\ub85c\uadf8\ub7a8 \ub0b4\uc758 \ubd84\uae30\ub97c \uc5b4\ub290\uc815\ub3c4 \ub9dd\ub77c\ud588\ub098\ub97c \ub098\ud0c0\ub0b4\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<br \/>\n\ucee4\ube0c\ub9ac\uc9c0\uc728\uc5d0\ub294 C0, C1, C2\ub77c\ub294 \ub808\ubca8\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc774 \ucf54\ub4dc\uc758 \uc608\ub85c \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"lang:ruby decode:true\"><code>def my_method\r\n  if type1 == \"A\"\r\n    print(\"\ucc98\ub9ac1\")\r\n  else\r\n    print(\"\ucc98\ub9ac2\")\r\n  end\r\n\r\n  if type == \"B\"\r\n    print(\"\ucc98\ub9ac3\")\r\n  end\r\nend\r\n<\/code><\/pre>\n<h3 id=\"toc_27\">C0 : \uba85\ub839\ub9dd\ub77c<\/h3>\n<p>C0\ub808\ubca8\uc5d0\uc11c\ub294 \uba85\ub839\uc744 \ub9dd\ub77c\ud574\uc788\ub294\uc9c0 \uc5b4\ub5a4\uc9c0\ub97c \ud310\ub2e8\ud569\ub2c8\ub2e4.<br \/>\n\uc989 \ucc98\ub9ac1 ~ \ucc98\ub9ac3\uc744 \ud55c \ubc88\uc529 \uc9c0\ub098\uac00\uba74 \ubb38\uc81c \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"lang:ruby decode:true\"><code>def my_method\r\n  if type1 == \"A\"\r\n    print(\"\ucc98\ub9ac1\")\r\n  else\r\n    print(\"\ucc98\ub9ac2\")\r\n  end\r\n\r\n  if type == \"B\"\r\n    print(\"\ucc98\ub9ac3\")\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub294 \uc774\ud558\uc758 \ub450 \uac1c\ub85c C0\ub808\ubca8\uc758 \ucee4\ubc84\ub9ac\uc9c0\uc728\uc774 100%\ub77c\uace0 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"decode:true\"><code>type == \"A\" TRUE,  type == \"B\" TRUE\r\ntype == \"A\" FALSE, type == \"B\" TRUE\r\n<\/code><\/pre>\n<h3 id=\"toc_28\">C1 : \ubd84\uae30\ub9dd\ub77c<\/h3>\n<p>C1\ub808\ubca8\uc5d0\uc11c\ub294 \ubd84\uae30\ub97c \ub9dd\ub77c\ud574\uc788\ub294\uc9c0 \uc5b4\ub5a4\uc9c0\ub97c \ud310\ub2e8\ud569\ub2c8\ub2e4.<br \/>\n\uc989 \ubaa8\ub4e0 \ubd84\uae30\ub97c \ud55c\ubc88\uc529 \ud1b5\uacfc\ud558\uba74 \uc624\ucf00\uc774\uc785\ub2c8\ub2e4.<\/p>\n<pre class=\"lang:ruby decode:true\"><code>def my_method\r\n  if type1 == \"A\"\r\n    print(\"\ucc98\ub9ac1\")\r\n  else\r\n    print(\"\ucc98\ub9ac2\")\r\n  end\r\n\r\n  if type == \"B\"\r\n    print(\"\ucc98\ub9ac3\")\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub294 \uc774\ud558\uc758 4\uac00\uc9c0\ub85c C1\ub808\ubca8\uc758 \ucee4\ubc84\ub9ac\uc9c0\uc728\uc774 100%\ub77c\uace0 \ub9d0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n2 + 2 = 4\uac00\uc9c0<\/p>\n<pre class=\"decode:true\"><code>type == \"A\" TRUE,  type == \"B\" TRUE\r\ntype == \"A\" FALSE, type == \"B\" TRUE\r\ntype == \"A\" TRUE,  type == \"B\" FALSE\r\ntype == \"A\" FALSE, type == \"B\" FALSE\r\n<\/code><\/pre>\n<h3 id=\"toc_29\">C2: \uc870\uac74\ub9dd\ub77c<\/h3>\n<p>C2\ub808\ubca8\uc5d0\uc11c\ub294 \ubd84\uae30\uc758 \uc870\ud569\ub3c4 \uc804\ubd80 \ub9dd\ub77c\ud588\ub294\uc9c0 \uc544\ub2cc\uc9c0 \ud310\ub2e8\ud569\ub2c8\ub2e4.<br \/>\n\uc774\uac83\uc740 \uc774\uc0c1\uc801\uc778 \ud14c\uc2a4\ud2b8\uc5d0 \uaf64 \uac00\uae4c\uc6cc\uc11c \ud070\uc77c\uc785\ub2c8\ub2e4.<\/p>\n<pre class=\"lang:ruby decode:true\"><code>def my_method\r\n  if type1 == \"A\"\r\n    print(\"\ucc98\ub9ac1\")\r\n  else\r\n    print(\"\ucc98\ub9ac2\")\r\n  end\r\n\r\n  if type == \"B\"\r\n    print(\"\ucc98\ub9ac3\")\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub294 \uc774\ud558\uc758 4\uac00\uc9c0\uc785\ub2c8\ub2e4\ub9cc, \uc2e4\uc81c\ub85c\ub294 \uc870\uac74\uc774 \ub298\uc5b4\ub098\uba74 \uc9c0\uc218\ud568\uc218\uc801\uc73c\ub85c \ud14c\uc2a4\ud2b8\ucf00\uc774\uc2a4\uac00 \ub298\uc5b4 \ub0a9\ub2c8\ub2e4.<br \/>\n2 * 2 = 4\uac00\uc9c0<\/p>\n<pre class=\"decode:true\"><code>type == \"A\" TRUE  &amp;&amp; type == \"B\" TRUE\r\ntype == \"A\" FALSE &amp;&amp; type == \"B\" TRUE\r\ntype == \"A\" TRUE  &amp;&amp; type == \"B\" FALSE\r\ntype == \"A\" FALSE &amp;&amp; type == \"B\" FALSE\r\n<\/code><\/pre>\n<h2 id=\"toc_30\">\ub3d9\uce58\ubd84\ud560\uacfc \uacbd\uacc4\uac12\ubd84\uc11d<\/h2>\n<p>\uadf8\ub7fc \uc5ec\uae30\uae4c\uc9c0 \uc124\uba85\uc73c\ub85c \uc870\uac74\ubd84\uae30\uc758 \uc218\ub85c \uc870\ud569\uc774 \uce74\uc6b4\ud2b8\ub418\ub294 \uac83\uc774 \uc774\ud574\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<br \/>\n\ud558\uc9c0\ub9cc, \uc544\uc9c1 \ud558\ub098 \ub354 \uc870\ud569\uc758 \ubcc0\uc218\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\uac83\uc740 \uac12\uc744 \ucde8\ud560 \uc218 \uc788\ub294 \ubc94\uc704\uc785\ub2c8\ub2e4.(\uce58\uc5ed)<\/p>\n<h3 id=\"toc_31\">\ucf00\uc774\uc2a4 \uc2a4\ud130\ub514<\/h3>\n<p>\uc774\ud558\uc758 \ucf54\ub4dc\uc758 \ud14c\uc2a4\ud2b8\uc804\ub7b5\uc5d0 \ub300\ud558\uc5ec \uc0dd\uac01\ud574\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"lang:ruby decode:true\"><code>\r\n# var\uc774 \uaebc\ub0b4\uc624\ub294 \uac12\uc740 String, Int, nil\uc758 \uc5b4\ub290\uac83\uc778\uac00?\r\ndef my_method(var)\r\n  var.your_method\r\nend\r\n\r\n<\/code><\/pre>\n<p>\ucee4\ubc84\ub9ac\uc9c0\uc801\uc73c\ub85c\ub294 \ud55c \ubc88\uc73c\ub85c \ucda9\ubd84\ud569\ub2c8\ub2e4<br \/>\n\ud558\uc9c0\ub9cc, \ucee4\ubc84\ub9ac\uc9c0\uc728\ub9cc \uc0dd\uac01\ud558\ub294\uac83\uc73c\ub860 \ubd88\ucda9\ubd84\ud569\ub2c8\ub2e4.<br \/>\n\uc774\ubc88\uc774\ub77c\uba74 String, Int, nil\uc758 \ucf00\uc774\uc2a4\ub97c \ucd5c\uc800\ud55c\uc73c\ub85c \ud14c\uc2a4\ud2b8\ud558\uace0 \uc2f6\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<p><strong><em>\ucee4\ubc84\ub9ac\uc9c0\uac00 \uacbd\ub85c\uc758 \ub9dd\ub77c\ub77c\uba74 \uc774\ubc88\uc5d0\ub294 \uac12\uc758 \ub9dd\ub77c\uc785\ub2c8\ub2e4.<\/em><\/strong><br \/>\n\ud558\uc9c0\ub9cc, \uac12\uc758 \ub9dd\ub77c\ub294 \ubb34\ud55c\uc758 \uac00\uc9c0\uc218\uac00 \uc788\uc2b5\ub2c8\ub2e4 (\uc790\uc5f0\uc218\ub9cc \ud574\ub3c4..)<br \/>\n\uadf8\ub7ec\uba74, \uc5b4\ub5bb\uac8c \ub9dd\ub77c\ud558\uba74 \uc88b\uc744\uae4c\uc694??<\/p>\n<h3 id=\"toc_32\">\ub3d9\uce58\ubd84\ud560<\/h3>\n<p>\uc608\uc640 \uac19\uc774 \ud574\uc124\uc740 \ub2e4\ub978 \uc774\ud574\ud558\uae30 \uc26c\uc6b4 \uae30\uc0ac\uc5d0 \ub9cf\uae30\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<p><a href=\"http:\/\/qualab.jp\/materials\/q_te.140528.color.pdf\">\ub3d9\uce58\ubd84\ud560\uc774\ub780 \ubb58\uae4c?(\uc77c\ubcf8\uc5b4)<\/a><\/p>\n<h3 id=\"toc_33\">\uacbd\uacc4\uac12\ubd84\ud560<\/h3>\n<p>\uadf8 \uc774\ub984 \uadf8\ub300\ub85c \uacbd\uacc4\uac12\uc744 \ud14c\uc2a4\ud2b8\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<h2 id=\"toc_34\">\ub9e4\ud2b8\ub9ad\uc2a4 \ud574\uc11d\uc774\ub780<\/h2>\n<p>\uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \uc815\uc801\uc73c\ub85c \ubd84\uc11d\ud558\uc5ec \uc5ec\ub7ec\uac00\uc9c0 \uad00\uc810\uc73c\ub85c\ubd80\ud130 \ud488\uc9c8\uc744 \uc815\ub7c9\ud3c9\uac00\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc774 \uc0ac\uace0\ubc29\uc2dd\uc744 \uc544\ub294 \uac83\uc73c\ub85c <strong><em>\uc5b4\ub5a4 \uc18c\uc2a4\ucf54\ub4dc\uc5d0 \ubc84\uadf8\uac00 \ub9ce\uc740\uac00?<\/em><\/strong> \ub77c\uace0 \ud558\ub294 \uac83\uc744 \uc5b4\ub290 \uc815\ub3c4 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc790\uc138\ud55c \uc124\uba85\uc740 \uc774\ud558\uc5d0 \ucc38\uace0\ub9c1\ud06c\ub97c \uc801\uc5b4\ub450\uaca0\uc2b5\ub2c8\ub2e4\ub9cc \uc21c\ud658\ubcf5\uc7a1\ub3c4\ub77c\uace0 \ubd88\ub9ac\uc6b0\ub294 \uc9c0\ud45c\ub9cc \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h3 id=\"toc_35\">\uc21c\ud658\ubcf5\uc7a1\ub3c4\ub780?<\/h3>\n<p>\uc18c\uc2a4\ucf54\ub4dc \uacbd\ub85c\uc758 \uc218\ub97c \uc138\ub294 \uac83\uc73c\ub85c \ubcf5\uc7a1\ub3c4\ub97c \ud45c\ud604\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<br \/>\n\uadf8\ub807\ub2e4\uace0 \ud558\ub354\ub77c\ub3c4, \uc5ec\uae30\uc758 \uae30\uc0ac\uac00 \uc555\ub3c4\uc801\uc73c\ub85c \uc54c\uae30 \uc27d\uac8c \ub418\uc788\uc73c\ubbc0\ub85c \uaf2d \ubd10\uc8fc\uc138\uc694.<\/p>\n<p><a href=\"http:\/\/tbpgr.hatenablog.com\/entry\/2015\/05\/15\/231825\">\\\ubc84\uadf8\ub2e4-!\/ \uc2dc\uc2a4\ud15c\uc5d0 \uc11c\uc2dd\ud558\ub294 \ubc84\uadf8\ub2d8\uc73c\ub85c\ubd80\ud130 \ubcf8 \ud018\uc801\ud568, \uc21c\ud658\ubcf5\uc7a1\ub3c4(Cyclomatic Complexity)\ub780? \\\ubc84\uadf8\ub2e4-!\/ (\uc77c\ubcf8\uc5b4) <\/a><\/p>\n<h2 id=\"toc_36\">\ucc38\uace0\ub9c1\ud06c<\/h2>\n<p>\ub9e4\ud2b8\ub9ad\uc2a4 \ud574\uc11d\uc774\ub780?<br \/>\n<a href=\"http:\/\/tbpgr.hatenablog.com\/entry\/20130813\/1376412269\">Ruby on Rails | metric_fu\ub85c \ub9e4\ud2b8\ub9ad\uc2a4 \ud574\uc11d (\uc77c\ubcf8\uc5b4)<\/a><br \/>\n<a href=\"http:\/\/qiita.com\/hondam\/items\/f3e73fa6bc8f239dcecf\">\uc815\uc801\ucf54\ub4dc\ud574\uc11d\ud234\uc778 MetricFu\ub294 \ubb34\uc5c7\uc744 \ubcf4\uace0 \uc788\ub294 \uac83\uc778\uac00? (\uc77c\ubcf8\uc5b4)<\/a><\/p>\n<p>\uac01\uc5b8\uc5b4 \ubcc4 \ub9e4\ud2b8\ub9ad\uc2a4\ud574\uc11d \ud234<br \/>\n<a href=\"http:\/\/www.itmedia.co.jp\/im\/articles\/0507\/22\/news101.html\">\ucc98\uc74c\ud558\ub294 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ub9e4\ud2b8\ub9ad\uc2a4(\uc804\ud3b8) : \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \ud488\uc9c8\uc744 \uc218\uce58\ud654\ud558\uc5ec \ud655\uc778\ud55c\ub2e4 (\uc77c\ubcf8\uc5b4)<\/a><\/p>\n<h2 id=\"toc_37\">\ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub97c \uc120\ud0dd\ud558\ub294 \ubc29\ubc95\uc744 \uace0\ub974\uace0 \uc2f6\uc744 \ub54c \uc77d\ub294\ub2e4.<\/h2>\n<p><a href=\"http:\/\/qiita.com\/shinofumijp@github\/items\/6121105c608fc0cf11d4#%E5%90%8C%E5%80%A4%E5%88%86%E5%89%B2%E6%B3%95%E3%81%A8%E5%A2%83%E7%95%8C%E5%88%86%E6%9E%90%E6%B3%95\">\u300c\uc9c0\uc2dd\uc81c\ub85c\ub85c\ubd80\ud130 \ubc30\uc6b0\ub294 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc544\ud2f0\uc2a4\ud2b8\u300d\ub97c \uc77d\uace0 \u300c\ud654\uc774\ud2b8\ubc15\uc2a4 \ud14c\uc2a4\ud2b8\ubd80\ud130 \ud0d0\uc0c9\uc801 \ud14c\uc2a4\ud2b8\uae4c\uc9c0\u300d &#8211; (\uc77c\ubcf8\uc5b4)<\/a><\/p>\n<h1 id=\"toc_38\">Q&amp;A<\/h1>\n<p>\uac70\uc758 \ub2e4 \uc791\uc131\ud588\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc, \ud504\ub85c\uc81d\ud2b8\uba64\ubc84 \uc804\uc6d0\uc774 \ud14c\uc2a4\ud2b8\uc758 \ud488\uc9c8\uc744 \uc9c0\ud0a4\ub294 \uac83\uc740 \uc5b4\ub835\uc2b5\ub2c8\ub2e4.<br \/>\n\uc5ec\uae30\uc11c, \uc9c0\uae08\uae4c\uc9c0 \ub098\uc628 \ub17c\uc810 \ub4f1\uc744 Q&amp;A\ubc29\uc2dd\uc73c\ub85c \uc791\uc131\ud574\ubcf4\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2 id=\"toc_39\">\uc9c8\ubb381 : \uc720\ub2db\ud14c\uc2a4\ud2b8\uc640 E2E\ud14c\uc2a4\ud2b8\ub294 \uc5b4\ub5bb\uac8c \uac00\ub824 \uc368\uc57c \ud558\ub098\uc694?<\/h2>\n<p>\uc774\uc0c1\uc801\uc73c\ub85c\ub294 \ubaa8\ub450 \ud568\uc218, \uba54\uc18c\ub4dc\uc758 \ud589\ub3d9\uac70\uc9c0\uc5d0 \ub300\ud558\uc5ec \uc720\ub2db\ud14c\uc2a4\ud2b8\ud558\uc5ec<br \/>\n\uadf8\uac83\ub4e4\uc758 \ubaa8\ub4e0 \uc870\ud569\uc744 E2E\ud14c\uc2a4\ud2b8\ub85c \ud14c\uc2a4\ud2b8\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<br \/>\n\ud558\uc9c0\ub9cc \ud604\uc2e4\uc801\uc73c\ub85c \uadf8\uac83\uc740 \uc5b4\ub835\uc2b5\ub2c8\ub2e4.<br \/>\n\uadf8\ub798\uc11c \ubcf5\uc7a1\ub3c4\uac00 \ub0ae\uc740 \ud568\uc218, \uba54\uc18c\ub4dc\ub294 \uc720\ub2db\ud14c\uc2a4\ud2b8\ub97c \ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<br \/>\n\ub3c5\ub9bd\ud574\uc788\ub294 \uc870\ud569\uc740 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub85c\ubd80\ud130 \uc18e\uc544\ub0c5\ub2c8\ub2e4.<br \/>\n\uc774\ub7f0 \uc0ac\uace0\ubc29\uc2dd\uc73c\ub85c \ud14c\uc2a4\ud2b8\ub97c \uc124\uacc4\ud569\ub2c8\ub2e4.<\/p>\n<h1 id=\"toc_40\">\ubc88\uc5ed \ud6c4\uae30<\/h1>\n<p>\uc774\ubc88\uc774 \uc138 \ubc88\uc9f8 \ubc88\uc5ed\uc778\ub370 \uaf64 \uc7a5\ubb38\uc758 \uae00\uc774\uc600\uc2b5\ub2c8\ub2e4. \ud6c4\ubc18\ubd80\ub294 \ub2e4\ub978\uae00\ub85c \ub9c1\ud06c\uac00 \ub9ce\uc544\uc11c \uc790\uc138\ud788 \uc774\ud574\ud558\uae30 \uc704\ud574\uc11c \ubd80\uc871\ud55c \ubd80\ubd84\ub3c4 \uc788\uaca0\uc9c0\ub9cc \uc55e \ubd80\ubd84\uc5d0\uc11c \ud14c\uc2a4\ud2b8\ub97c \uc5b4\ub5a4 \uc0dd\uac01\uc744 \ud574\uc11c \uc791\uc131\ud574\ub0b4\ub294\uc9c0\uc5d0 \ub300\ud55c \ubd80\ubd84\ub9cc\uc73c\ub85c\ub3c4 \uaf64 \uc88b\uc740 \ub0b4\uc6a9\uc774 \ub9ce\uae30 \ub54c\ubb38\uc5d0 \ubb38\uc81c\uac00 \uc5c6\uc744 \uac83\uc774\ub77c \uc0dd\uac01\ud569\ub2c8\ub2e4. \uac19\uc740 \ud55c\uc790 \ubb38\ud654\uad8c\uc774\uace0 \uc77c\ubcf8\uc758 \uc601\ud5a5\uc744 \ub9ce\uc774 \ubc1b\uc544 \ud574\uc11d\ud560 \ub54c \uae30\uacc4\uc801\uc73c\ub85c \ud558\uac8c \ub420 \uc904 \uc54c\uc558\ub294\ub370 \uc758\uc678\ub85c \ud55c\uc790 \ub2e8\uc5b4\ub4e4\uc774 \ud55c\uad6d\uc774\ub791 \ub2e4\ub974\uac8c \uc4f0\uc774\ub294 \uacbd\uc6b0\uac00 \uc788\uc5c8\uc5b4\uc11c \uc7ac\ubbf8\uc788\uac8c \ubc88\uc5ed\ud55c \uae00\uc778 \uac83 \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc774 \uae00\uc740 Qitta\uc758 geshi\ub2d8\uc774 \uc791\uc131\ud55c \u30c6\u30b9\u30c8\u304c\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u6367\u3050\u3001\u6b63\u3057\u3044\u30c6\u30b9\u30c8\u306e\u8003\u3048\u65b9, 2016\ub144 3\uc6d4 9\uc77c \uac31\uc2e0 \uae00\uc744 \ubc88\uc5ed\ud55c \uac83\uc785\ub2c8\ub2e4. \uc774 \uae00\uc758 \ub300\uc0c1\uc790 \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \ud14c\uc2a4\ud2b8\ub97c<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[43],"tags":[432,424,428,426,420,430,422],"class_list":["post-716","post","type-post","status-publish","format-standard","hentry","category-computer-science","tag-432","tag-424","tag-428","tag-426","tag-420","tag-430","tag-422"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8gT1J-by","_links":{"self":[{"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/posts\/716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/comments?post=716"}],"version-history":[{"count":3,"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/posts\/716\/revisions"}],"predecessor-version":[{"id":726,"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/posts\/716\/revisions\/726"}],"wp:attachment":[{"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/media?parent=716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/categories?post=716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jinukbaek.com\/blog\/wp-json\/wp\/v2\/tags?post=716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}