{"id":307,"date":"2009-07-20T00:59:57","date_gmt":"2009-07-19T16:59:57","guid":{"rendered":"http:\/\/test999.eblhost.com\/blog\/?p=307"},"modified":"2009-11-17T10:53:36","modified_gmt":"2009-11-17T02:53:36","slug":"max%ef%bc%9a%e7%a8%8b%e5%ba%8f%e7%bb%98%e5%88%b6","status":"publish","type":"post","link":"https:\/\/learn.travelchinawith.me\/?p=307","title":{"rendered":"Max\uff1a\u7a0b\u5e8f\u7ed8\u5236"},"content":{"rendered":"

\"max11\"<\/a><\/p>\n

\n

\n

1. \u5de6\u4e0a\u89d2\u7684\u4f8b\u5b50\uff1acounter\u7269\u4ef6\u53ef\u4ee5\u751f\u6210\u4e00\u7ec4\u5faa\u73af\u7684\u503c\u3002\u4f9d\u6b21\u70b9\u51fb\u7b2c\u4e00\u4e2a\u6309\u94ae\u53ef\u4ee5\u4f9d\u6b21\u751f\u6210\u4e00\u7ec40-9\u7684\u5faa\u73af\u503c\u3002counter\u7b2c\u4e09\u4e2a\u8f93\u5165\u53e3\u4e3a\u201c\u8d4b\u503c\u4e8e\u4e0b\u4e00\u6b21\u70b9\u51fb\u201d\uff0c\u6bd4\u5982\u7269\u4ef6\u6539\u53d8\u7b2c\u4e00\u6392\u7b2c\u4e00\u4e2a\u6570\u5b57\u6846\u7684\u6570\u5b57\u4e3a5\uff0c\u53ef\u4ee5\u5728\u4e0b\u4e00\u6b21\u70b9\u51fb\u7684\u65f6\u5019\u76f4\u63a5\u8df3\u52305\uff0c\u800c\u65e0\u8bba\u4e4b\u524d\u7684\u6570\u5b57\u662f\u51e0\uff0c\u70b9\u51fb\u84dd\u8272\u80cc\u666f\u7684\u6309\u94ae\uff08\u53d1\u9001bang\u4fe1\u606f\uff09\u5219\u53ef\u4ee5\u5c06\u4e0b\u4e00\u6b21\u70b9\u51fb\u7684\u503c\u6062\u590d\u5230\u96f6\u3002counter\u7269\u4ef6\u6700\u540e\u4e00\u4e2a\u8f93\u5165\u53e3\u53ef\u4ee5\u5b9e\u65f6\u8bbe\u5b9a\u6700\u5927\u503c\u3002<\/p>\n

\n

2. counter\u7684\u591a\u5f15\u6570\u5e94\u7528\uff1a1\u4e2a\u5f15\u6570\uff1a\u8bbe\u5b9a\u6700\u5927\u503c\uff1b2\u4e2a\u5f15\u6570\uff1a\u8bbe\u5b9a\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\uff1b\u4e09\u4e2a\u5f15\u6570\uff1a\u8bbe\u5b9a\u65b9\u5411\uff08direction\uff09\u3001\u6700\u5c0f\u548c\u6700\u5927\u503c\u3002<\/p>\n

\n

3. scale\u7269\u4ef6\uff1a\u5c06\u4e00\u7ec4\u8f93\u5165\u503c\u7684\u8303\u56f4\uff08\u5f15\u6570\u524d\u4e24\u4f4d\uff09\u6620\u5c04\u5230\u4e00\u7ec4\u8f93\u51fa\u503c\u8303\u56f4\uff08\u5f15\u6570\u540e\u4e24\u4f4d\uff09\u5185\u3002\u5de6\u5217\u4e8c\u4f8b\uff1a\u8f93\u5165\u503c0-100\u5e76\u6620\u5c04\u5230\u8f93\u51fa\u503c-1.0\uff5e1.0\u4e0a\uff0c\u5373\uff1a\u5982\u8f93\u5165\u503c\u4e3a0\uff0c\u5219\u8f93\u51fa\u503c\u4e3a-1.0\uff1b\u8f93\u5165\u503c\u4e3a100\uff0c\u8f93\u51fa\u503c\u4e3a1.0\uff1b\u8f93\u5165\u503c\u4e3a50\uff0c\u8f93\u51fa\u503c\u4e3a0.0\u3002\u5982\u679c\u8f93\u5165\u503c\u8d85\u8d8a\u8f93\u5165\u503c\u8303\u56f4\uff0c\u8f93\u51fa\u503c\u4e5f\u4f1a\u6309\u8ba1\u7b97\u7684\u589e\u91cf\u76f8\u5e94\u589e\u52a0\u3002\u56e0\u6b64\uff0c\u8f93\u5165150\u8f93\u51fa\u5219\u4e3a2.0\uff0c\u8f93\u5165-100\u8f93\u51fa\u5219\u4e3a-3.0\u3002\u8fd9\u4e2a\u7269\u4ef6\u7684\u5f15\u6570\u662f\u7528\u4e8e\u51b3\u5b9a\u8f6c\u6362\u7684\u6570\u5b66\u8868\u8fbe\u5f0f\u3002<\/p>\n

\n

4. \u5de6\u5217\u4e09\u4f8b\uff1a\u70b9\u51fb\u7b2c\u4e00\u4e2a\u6d88\u606f\u6846\uff0c\u6700\u4e0b\u8fb9\u7684\u6570\u5b57\u6846\u5c06\u57281000\u6beb\u79d2\uff081\u6beb\u79d2=1\/1000\u79d2\uff09\u5185\u75310\u589e\u52a0\u5230\u76ee\u6807\u503c\uff08100\uff09\u3002\u70b9\u51fb\u7b2c\u4e8c\u4e2a\u6d88\u606f\u6846\uff0c\u8d77\u59cb\u503c\u5c06\u57285000\u6beb\u79d2\uff085\u79d2\uff09\u540e\u56de\u52300\u3002\u70b9\u51fb\u7b2c\u4e09\u4e2a\u6d88\u606f\u6846\uff0c\u6570\u5b57\u5c06\u57282.5\u79d2\u540e\u753120\u4e0a\u5347\u523050\u3002<\/p>\n

\n

5. \u5927\u5bb6\u4f19\uff1a<\/p>\n

#1\uff1a\u4f7f\u7528\u4e864\u4e2a\u4e0d\u540c\u7684counter\u7269\u4ef6\uff0c\u4e00\u4e2a\u7528\u4e8e\u8bbe\u5b9a\u4f4d\u7f6e\u548c\u5927\u5c0f\uff0c\u53e6\u5916\u4e09\u4e2a\u6539\u53d8\u989c\u8272\u3002\u9700\u8981\u4e86\u89e3\u6700\u5de6\u8fb9\u7684\u90a3\u4e2acounter\u662f\u6700\u91cd\u8981\u7684\uff0c\u5b83\u4ece0\u6570\u5230767\uff0c\u5171\u7ed9\u6211\u4eec768\u6b65\u3002x\/y\u8f74\u7684\u503c\u5219\u7531%\uff08\u4e00\u4e2a\u6570\u5b57\u9664\u4ee5\u53e6\u4e00\u4e2a\u6570\u5b57\uff0c\u6574\u9664\u540e\u8f93\u51fa\u5269\u4f59\u7684\u503c\uff0c\u4f8b\u598222%10=2\uff09\u548c\/\uff08\u4e00\u4e2a\u6570\u5b57\u9664\u4ee5\u53e6\u4e00\u4e2a\u6570\u5b57\uff0c\u8f93\u51fa\u7ed3\u679c\uff09\u7269\u4ef6\u8ba1\u7b97\uff0c\u5c06\u6211\u4eec\u7684lcd\u7269\u4ef6\u6253\u788e\u4e3a24×24\u7684\u683c\u5b50\u3002\u6ce8\u610f\u770bcounter\u7684\u4e24\u4e2a\u8f93\u51fa\uff0c\u5b83\u4eec\u5747\u751f\u6210\u4e86\u4e00\u7ec40-23\u7684\u5faa\u73af\uff0c%\u8dd1\u5f97\u5feb\uff0c\/\u4f9dmetro\u7684\u901f\u7387\u6539\u53d8\u3002\u8fd9\u4e2a\u503c\u4e58\u4ee510\uff08\u83b7\u5f97\u5de6\u4e0a\u89d2\u7684\u50cf\u7d20\u4f4d\u7f6e\uff09\u540e\u52a010\uff08\u83b7\u5f97\u53f3\u4e0b\u89d2\u7684\u50cf\u7d20\u503c\uff09\u3002\u8fd9\u4e3a\u6211\u4eec\u7684\u7a0b\u5e8f\u5efa\u7acb\u4e86\u4e00\u4e2a\u53ef\u7528\u6765\u4f5c\u753b\u7684\u4ee5\u5706\u5f62\u586b\u5145\u7684lcd\u65b9\u683c\u754c\u9762\u3002\u53e6\u5916\u4e09\u4e2acounter\u7269\u4ef6\u5728\u4e09\u4e2a\u4e0d\u540c\u7684\u6570\u503c\u8303\u56f4\u5185\u5faa\u73af\uff0c\u4f7f\u6211\u4eec\u5f97\u5230\u4e86\u4e00\u4e2a\u4e0d\u65ad\u53d8\u8272\u7684\u8c03\u8272\u677f\u3002\u7b2c\u4e00\u4e2a\u5f15\u65702\u5f3a\u5236counter\u4ece\u5c0f\u503c\u589e\u52a0\u5230\u6700\u5927\u503c\u4e4b\u540e\u518d\u51cf\u5c0f\u5230\u6700\u5c0f\u503c\uff0c\u5982\u6b64\u53cd\u590d\u3002\u8fd9\u662f\u5728\u7ed8\u5236\u65f6\u989c\u8272\u7f13\u6162\u6539\u53d8\u7684\u539f\u56e0\u3002\u8fd9\u4e2a\u5f15\u6570\uff08direction\uff09\u7684\u4f7f\u7528\uff1a0=\u589e\u52a0\uff0c1=\u51cf\u5c0f\uff0c2=\u589e\u52a0\u540e\u51cf\u5c0f\uff0c\u5982\u6b64\u53cd\u590d\u3002<\/p>\n

\n

#2\uff1a\u8fd0\u7528scale\u7269\u4ef6\u7ed8\u5236\u57fa\u4e8e\u6b63\u5f26\u6ce2\u8ba1\u7b97\u7684\u5f62\u72b6\u3002counter’\u7269\u4ef6\u4ea7\u751f\u4ece0\u5230\u6700\u5927\u503c\uff08\u7531metro\u7269\u4ef6\u53f3\u4fa7\u7684\u4e24\u4e2a\u6570\u5b57\u6846\u5185\u6570\u5b57\u51b3\u5b9a\uff09\u7684\u8f93\u51fa\u3002\u5b83\u88abscale\u7269\u4ef6\u754c\u5b9a\u4e8e0.0\uff5e6.283185\uff082\u00d7\u03c0\uff09\u4e4b\u95f4\uff0c\u800c\u540e\u53d1\u9001\u8fdb\u5165\u4e00\u4e2asin\u7269\u4ef6\uff0c\u8ba1\u7b97\u51fa\u8f93\u5165\u503c\u7684\u6b63\u5f26\u503c\uff0c\u4ea7\u751f\u4e00\u4e2a\u5728-1.0\uff5e1.0\u8303\u56f4\u5185\u53d8\u52a8\u7684\u6b63\u5f26\u6ce2\u3002\u8fd9\u4e2a\u503c\u88ab\u9001\u5165\u53e6\u4e00\u4e2ascale\u7269\u4ef6\uff0c\u6620\u5c04\u8fdb\u5165\u4e00\u4e2a\u6574\u6570\u8303\u56f40\uff5e319\uff08lcd\u7269\u4ef6\u7684\u5927\u5c0f\u8303\u56f4\uff09\u4e4b\u5185\uff0c\u8fd9\u7528\u4e8e\u4ea7\u751fx\u8f74\u7684\u503c\u3002\u5b83\u9694\u58c1\u4e0e\u5b83\u540c\u6837\u7684\u90a3\u5806\u65b9\u5757\u513f\u7528\u4e8e\u4ea7\u751fy\u8f74\u7684\u503c\u3002\u8fd9\u4e9b\u6570\u5b57\u968f\u540e\u88ab\u63d2\u5165\u4e00\u7ec4\u6570\u5217\uff08list\uff09\uff08\u4f7f\u7528pack\u7269\u4ef6\uff0c\u4f7f\u7528prepend\u7269\u4ef6lineto\u5b83\u4eec\uff09\u540e\u88ab\u4f20\u9001\u5230lcd\u5185\u3002<\/p>\n

\n

#3\uff1a\u76ee\u524d\u4e3a\u6b62\u6211\u4eec\u89c1\u8fc7\u7684\u6700\u590d\u6742\u7684\u7a0b\u5e8f\u3002\u5b83\u4f9d\u9760lcd\u7269\u4ef6\u7684\u7a7a\u95f2\uff08idle\uff09\u673a\u5236\u505a\u4e00\u4e9b\u7a0b\u5e8f\u7ed8\u5236\u3002\u5f53idle\u6d88\u606f\u5f00\u542f\uff08\u901a\u8fc7idle 1\u6d88\u606f\uff09\u3002lcd\u7269\u4ef6\u4f1a\u8f93\u51fa\u4f60\u9f20\u6807\u5f53\u524d\u76f8\u5bf9\u4e8elcd\u7269\u4ef6\u753b\u5e03\u7684\u4f4d\u7f6e\u3002x\/y\u5750\u6807\u7531lcd\u7269\u4ef6\u7684\u7b2c\u4e8c\u4e2a\u8f93\u51fa\u53e3\u8f93\u51fa\u4e3a\u4e00\u7ec4list\u3002\u6de1\u84dd\u8272\u8fde\u63a5\u7ebf\u5c06\u5f53\u524d\u9f20\u6807\u5750\u6807\u9001\u5165unpack\u7269\u4ef6\uff0c\u8fd9\u4e9b\u503c\u88ab\u9001\u5165\u6211\u4eec\u7684\u7ed8\u753b\u4ee3\u7801\uff0c\u521b\u9020\u51fa\u4e00\u7ec4\u503c\uff0c\u7ed8\u5236\u51fa\u4e24\u4e2a\u80fd\u591f\u8ddf\u968f\u9f20\u6807\u53cd\u5e94\u7684\u5706\u5f62\uff0c\u5e76\u4e14\u80fd\u591f\u5bf9\u9f20\u6807\u4e0e\u5b83\u4eec\u7684\u4e0d\u540c\u8ddd\u79bb\u4ea7\u751f\u4e0d\u540c\u53cd\u5e94\u3002\u5f00\u542f\u6700\u9876\u7aef\u7684toggle\u76d2\u5b50\uff0c\u7136\u540e\u7528\u9f20\u6807\u5728lcd\u4e0a\u8f6c\u8f6c\uff0c\u770b\u770b\u90a3\u4fe9\u7403\u662f\u5982\u4f55\u53cd\u5e94\u7684\u3002<\/p>\n

\u5728\u8fd9\u4e2a\u7a0b\u5e8f\u5185\u6709\u975e\u5e38\u91cd\u8981\u7684\u4e24\u6b65\uff1a\u7b2c\u4e00\uff0c\u7528line\u7269\u4ef6\u4f7f\u5f97\u8f93\u51fa\u503c\u7684\u65f6\u95f4\u5468\u671f\u4e3a1\u79d2\uff081000\u6beb\u79d2\uff09\uff0c\u8fd9\u4f7f\u5f97\u4ea7\u751f\u7684\u7ed3\u679c\u5728\u4e0d\u65ad\u63d2\u5165\u7684\u8fc7\u7a0b\u4e2d\u6709\u4e00\u79cd\u66f4\u6709\u673a\u7684\u611f\u89c9\u3002\u7b2c\u4e8c\uff0c\u6211\u4eec\u8fd0\u7528cartopol(cartesian to polar) \u7269\u4ef6\u4f7f\u5f97\u9f20\u6807\u7684x\/y\u8f74(“Cartesian”)\u7b1b\u5361\u5c14\u5750\u6807\u503c\u8f6c\u5316\u4e3a\u4e00\u5bf9\u57fa\u4e8e\u8ddd\u79bb\/\u89d2(“Polar”)\u7684\u6781\u5750\u6807\u503c\uff0c\u8fd9\u5bf9\u5728\u5706\u5f62\u8303\u56f4\u5185\u7ed8\u5236\u5185\u5bb9\u5f88\u6709\u5e2e\u52a9\u3002\u4e00\u65e6polar\u5750\u6807\u88ab\u8ba1\u7b97\u51fa\u6765\uff0c\u5b83\u4eec\u5c06\u88ab\u9650\u5236\u7b26\u5408\u4e8e\u5706\u5f62\u7ed8\u5236\u8303\u56f4\u7684\u5927\u5c0f\uff0c\u7136\u540e\u88ab\u7528\u4e8e\u4e00\u4e2a\u590d\u6742\u3001\u591a\u6d88\u606f\u6d88\u606f\u6846\u7684\u4e00\u90e8\u5206\uff0c\u7ed3\u679c\u5c31\u662f\u4f60\u770b\u5230\u7684\u90a3\u4e24\u4e2a\u7403\u4f53\u3002<\/p>\n

\u7a0b\u5e8f\u5e95\u90e8\u7684\u6d88\u606f\u6846\u53d1\u90014\u4e2a\u6709\u5e8f\u7684\u7ed8\u5236\u547d\u4ee4\u5230lcd\u7269\u4ef6\u3002\u524d\u4e24\u4e2a\u7528paintoval\u547d\u4ee4\u7ed8\u5236\u56fa\u5b9a\u4f4d\u7f6e(100 100 140 140 \u548c 180 100 220 240)\u7684\u4e24\u4e2a\u80cc\u666f\u5706\u5f62\uff0c\u540e\u4e09\u4e2a\u6570\u5b570 0 0\u8bbe\u5b9a\u5b83\u4eec\u7684\u989c\u8272\u4e3a\u9ed1\u8272\u3002\u540e\u4e24\u4e2a\u7528pack\u7269\u4ef6\u5f97\u5230\u7684\u503c\u7ed8\u5236\u51fa\u4e24\u4e2a\u7eff\u8272\uff080 255 0\uff09\u7684\u201c\u8ffd\u968f\u8005\u201d\uff0c\u56db\u4e2a\u503c\u63d0\u4f9b\u4e86\u201c\u8ffd\u968f\u8005\u201d\u5f00\u59cb\u548c\u7ed3\u675f\u7684\u89d2\u5ea6\u5e76\u7531paintarc\u547d\u4ee4\u7ed8\u5236\u51fa\u6765\u3002<\/p>\n

\n

6. \u7ed3\u8bba\uff1a\u8fd0\u7528\u4e00\u7ec4\u8f93\u5165\u503c\uff0c\u7136\u540e\u4f9d\u636e\u4f60\u7684\u9700\u8981scale\u5b83\u4eec\uff0c\u8fd9\u662f\u5f88\u591aMax\u7a0b\u5e8f\u81f3\u5173\u91cd\u8981\u7684\u6b65\u9aa4\u3002\u7528counter\u7269\u4ef6\u521b\u9020\u5faa\u73af\uff0c\u7528scale\u7269\u4ef6\u5c06\u8f93\u5165\u503cscale\u5230\u8f93\u51fa\u503c\uff0c\u5e76\u7528line\u7269\u4ef6\u5728\u4e0d\u540c\u7684\u65f6\u95f4\u5185\u63d2\u5165\u6570\u5b57\u3002\u6709\u65f6\uff0c\u6211\u4eec\u4e5f\u4f1a\u8fd0\u5230\u4e00\u4e9b\u57fa\u4e8e\u4e09\u89d2\u5b66\u8ba1\u7b97\u7684\u7269\u4ef6\u3002<\/p>\n

\n

\u672c\u4f8b\u5185\u65b0\u7269\u4ef6\uff1a<\/strong><\/p>\n

count\uff1a\u8ba1\u7b97\u6536\u5230\u7684bang\u8baf\u606f\uff0c\u8f93\u51fa\u5b83\u3002<\/p>\n

scale\uff1a\u5c06\u4e00\u7ec4\u8f93\u5165\u503c\u8303\u56f4\u6620\u5c04\u5230\u4e00\u7ec4\u8f93\u51fa\u503c\u8303\u56f4\u3002<\/p>\n

line\uff1a\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u5e73\u6ed1\u8f93\u51fa\u4e00\u4e2a\u503c\u5230\u53e6\u4e00\u4e2a\u503c\u3002<\/p>\n

sin\uff1a\u6b63\u5f26\u529f\u80fd\u3002<\/p>\n

cartopol\uff1a\u7b1b\u5361\u5c14\uff08Cartesian\uff09\u5750\u6807\u5230\u6781\uff08Polar\uff09\u5750\u6807\u7684\u8f6c\u6362\u3002<\/p>\n

\n

\u76f8\u5173\u77e5\u8bc6\uff1a<\/strong><\/p>\n

1. \u6b63\u5f26\uff1a\u6b63\u5f26\u662f\u4e09\u89d2\u51fd\u6570<\/a>\u7684\u4e00\u79cd\u3002\u5b83\u7684\u5b9a\u4e49\u57df\u662f\u6574\u4e2a\u5b9e\u6570\u96c6\uff0c\u503c\u57df\u662f[-1,1]\u3002\u5b83\u662f\u5468\u671f\u51fd\u6570\uff0c\u5176\u6700\u5c0f\u6b63\u5468\u671f\u4e3a2\u03c0\u3002\u5728\u81ea\u53d8\u91cf\u4e3a(4n+1)\u03c0\/2\u3014n\u4e3a\u6574\u6570\u3015\u65f6\uff0c\u8be5\u51fd\u6570\u6709\u6781\u5927\u503c1\uff1b\u5728\u81ea\u53d8\u91cf\u4e3a(4n+3)\u03c0\/2\u65f6\uff0c\u8be5\u51fd\u6570\u6709\u6781\u5c0f\u503c-1\u3002\u6b63\u5f26\u51fd\u6570\u662f\u5947\u51fd\u6570\uff0c\u5176\u56fe\u50cf\u5173\u4e8e\u539f\u70b9\u5bf9\u79f0\u3002<\/p>\n

\"\"<\/a>2. \u7b1b\u5361\u5c14\u5750\u6807\u7cfb\uff1a\u5728\u6578\u5b78<\/a>\u88cf\uff0c\u7b1b\u5361\u5152\u5750\u6a19\u7cfb\uff0c\u4e5f\u7a31\u76f4\u89d2\u5750\u6a19\u7cfb\uff0c\u662f\u4e00\u7a2e\u6b63\u4ea4\u5750\u6a19\u7cfb<\/a>\u3002\u4e8c\u7dad\u7684\u76f4\u89d2\u5750\u6a19\u7cfb\u662f\u7531\u5169\u689d\u76f8\u4e92\u5782\u76f4\u30010 \u9ede\u91cd\u5408\u7684\u6578\u8ef8\u69cb\u6210\u7684\u3002\u5728\u5e73\u9762\u5167\uff0c\u4efb\u4f55\u4e00\u9ede\u7684\u5750\u6a19 \u662f\u6839\u64da\u6578\u8ef8\u4e0a \u5c0d\u61c9\u7684\u9ede\u7684\u5750\u6a19\u8a2d\u5b9a\u7684\u3002\u5728\u5e73\u9762\u5167\uff0c\u4efb\u4f55\u4e00\u9ede\u8207\u5750\u6a19\u7684\u5c0d\u61c9\u95dc\u4fc2\uff0c\u985e\u4f3c\u65bc\u6578\u8ef8\u4e0a\u9ede\u8207\u5750\u6a19\u7684\u5c0d\u61c9\u95dc\u4fc2\u3002<\/p>\n

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\"\"<\/a>3. \u6781\u5750\u6807\u7cfb\uff1a\u5728\u6570\u5b66<\/a>\u4e2d\uff0c\u6781\u5750\u6807\u7cfb\u662f\u4e00\u4e2a\u4e8c\u7ef4<\/a>\u5750\u6807\u7cfb\u7edf<\/a>\u3002\u8be5\u5750\u6807\u7cfb\u7edf\u4e2d\u7684\u70b9\u7531\u4e00\u4e2a\u5939\u89d2<\/a>\u548c\u4e00\u6bb5\u76f8\u5bf9\u4e2d\u5fc3\u70b9<\/a>\u2014\u2014\u6781\u70b9\uff08\u76f8\u5f53\u4e8e\u6211\u4eec\u8f83\u4e3a\u719f\u77e5\u7684\u76f4\u89d2\u5750\u6807\u7cfb<\/a>\u4e2d\u7684\u539f\u70b9\uff09\u7684\u8ddd\u79bb\u6765\u8868\u793a\u3002\u6781\u5750\u6807\u7cfb\u7684\u5e94\u7528\u9886\u57df\u5341\u5206\u5e7f\u6cdb\uff0c\u5305\u62ec\u6570\u5b66<\/a>\u3001\u7269\u7406<\/a>\u3001\u5de5\u7a0b<\/a>\u3001\u822a\u6d77<\/a>\u4ee5\u53ca\u673a\u5668\u4eba<\/a>\u9886\u57df\u3002\u5728\u4e24\u70b9\u95f4\u7684\u5173\u7cfb\u7528\u5939\u89d2\u548c\u8ddd\u79bb\u5f88\u5bb9\u6613\u8868\u793a\u65f6\uff0c\u6781\u5750\u6807\u7cfb\u4fbf\u663e\u5f97\u5c24\u4e3a\u6709\u7528\uff1b\u800c\u5728\u5e73\u9762\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d\uff0c\u8fd9\u6837\u7684\u5173\u7cfb\u5c31\u53ea\u80fd\u4f7f\u7528\u4e09\u89d2\u51fd\u6570<\/a>\u6765\u8868\u793a\u3002\u5bf9\u4e8e\u5f88\u591a\u7c7b\u578b\u7684\u66f2\u7ebf\uff0c\u6781\u5750\u6807\u65b9\u7a0b\u662f\u6700\u7b80\u5355\u7684\u8868\u8fbe\u5f62\u5f0f\uff0c\u751a\u81f3\u5bf9\u4e8e\u67d0\u4e9b\u66f2\u7ebf\u6765\u8bf4\uff0c\u53ea\u6709\u6781\u5750\u6807\u65b9\u7a0b\u80fd\u591f\u8868\u793a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

1. \u5de6\u4e0a\u89d2\u7684\u4f8b\u5b50\uff1acounter\u7269\u4ef6\u53ef\u4ee5\u751f\u6210\u4e00\u7ec4\u5faa\u73af\u7684\u503c\u3002\u4f9d\u6b21\u70b9\u51fb\u7b2c\u4e00\u4e2a\u6309\u94ae\u53ef\u4ee5\u4f9d\u6b21\u751f\u6210\u4e00\u7ec40-9\u7684\u5faa\u73af\u503c\u3002counter\u7b2c\u4e09\u4e2a\u8f93\u5165\u53e3\u4e3a\u201c\u8d4b\u503c\u4e8e\u4e0b\u4e00\u6b21\u70b9\u51fb\u201d\uff0c\u6bd4\u5982\u7269\u4ef6\u6539\u53d8\u7b2c\u4e00\u6392\u7b2c\u4e00\u4e2a\u6570\u5b57\u6846\u7684\u6570\u5b57\u4e3a5\uff0c\u53ef\u4ee5\u5728\u4e0b\u4e00\u6b21\u70b9\u51fb\u7684\u65f6\u5019\u76f4\u63a5\u8df3\u52305\uff0c\u800c\u65e0\u8bba\u4e4b\u524d\u7684\u6570\u5b57\u662f\u51e0\uff0c\u70b9\u51fb\u84dd\u8272\u80cc\u666f\u7684\u6309\u94ae\uff08\u53d1\u9001bang\u4fe1\u606f\uff09\u5219\u53ef\u4ee5\u5c06\u4e0b\u4e00\u6b21\u70b9\u51fb\u7684\u503c\u6062\u590d\u5230\u96f6\u3002counter\u7269\u4ef6\u6700\u540e\u4e00\u4e2a\u8f93\u5165\u53e3\u53ef\u4ee5\u5b9e\u65f6\u8bbe\u5b9a\u6700\u5927\u503c\u3002 2. counter\u7684\u591a\u5f15\u6570\u5e94\u7528\uff1a1\u4e2a\u5f15\u6570\uff1a\u8bbe\u5b9a\u6700\u5927\u503c\uff1b2\u4e2a\u5f15\u6570\uff1a\u8bbe\u5b9a\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\uff1b\u4e09\u4e2a\u5f15\u6570\uff1a\u8bbe\u5b9a\u65b9\u5411\uff08direction\uff09\u3001\u6700\u5c0f\u548c\u6700\u5927\u503c\u3002 3. 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