{"id":545,"date":"2013-04-09T23:24:22","date_gmt":"2013-04-09T14:24:22","guid":{"rendered":"http:\/\/dev.activebasic.com\/egtra\/?p=545"},"modified":"2018-02-04T03:40:56","modified_gmt":"2018-02-03T18:40:56","slug":"%e9%85%8d%e5%88%97%e7%89%88boostshared_ptr%e3%81%ae%e5%88%9d%e6%9c%9f%e5%8c%96","status":"publish","type":"post","link":"https:\/\/dev.activebasic.com\/egtra\/2013\/04\/09\/545\/","title":{"rendered":"\u914d\u5217\u7248boost::shared_ptr\u306e\u521d\u671f\u5316"},"content":{"rendered":"<p>\u914d\u5217\u7248shared_ptr\u3092new[]\u3067\u521d\u671f\u5316\u3059\u308b\u8a71\u3067\u3059\u3002<a href=\"http:\/\/d.hatena.ne.jp\/gintenlabo\/20130404\/1365059185\">make_shared \u3067\u78ba\u4fdd\u3055\u308c\u305f\u30e1\u30e2\u30ea\u9818\u57df\u306f\uff0c\u305d\u308c\u3092\u53c2\u7167\u3059\u308b weak_ptr \u304c\u7121\u304f\u306a\u3089\u306a\u3044\u9650\u308a\u89e3\u653e\u3055\u308c\u306a\u3044 &#8211; \u91ce\u826fC++er\u306e\u96d1\u8a18\u5e33<\/a>\u3092\u898b\u3066\u3001maked_shared\u3092\u4f7f\u308f\u306a\u3044\u4f8b\u3092\u7d39\u4ecb\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u601d\u3044\u51fa\u3057\u305f\u306e\u3067\u3001\u53d6\u308a\u4e0a\u3052\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002\u3068\u304d\u306b\u306f\u5fc5\u8981\u3068\u306a\u308b\u3053\u3068\u3082\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<pre lang=\"cpp\">\r\n#include <iostream>\r\n#include <boost\/shared_ptr.hpp>\r\n\r\nint main()\r\n{\r\n  boost::shared_ptr<int[]> p1(new int[4]);\r\n  boost::shared_ptr<int[4]> p2(new int[4]);\r\n\r\n  p1[3] = 101;\r\n  std::cout << p1[3] << std::endl;\r\n\r\n  p2[3] = 103;\r\n  std::cout << p2[3] << std::endl;\r\n}\r\n<\/pre>\n<p>boost::shared_ptr\u3084boost::shared_array\u3068\u540c\u3058\u3067\u3059\u306d\u3002<\/p>\n<p>\u3082\u3061\u308d\u3093\u3001boost::shared_ptr\u306a\u306e\u3067\u524a\u9664\u5b50\u306e\u6307\u5b9a\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre lang=\"cpp\">\r\n#include <iostream>\r\n#include <cstdlib>\r\n#include <boost\/shared_ptr.hpp>\r\n\r\nint main()\r\n{\r\n  boost::shared_ptr<int[]> p1(\r\n    static_cast<int*>(std::malloc(sizeof (int) * 4)), std::free);\r\n  boost::shared_ptr<int[4]> p2(\r\n    static_cast<int*>(std::malloc(sizeof (int) * 4)), std::free);\r\n\r\n  p1[3] = 201;\r\n  std::cout << p1[3] << std::endl;\r\n\r\n  p2[3] = 205;\r\n  std::cout << p2[3] << std::endl;\r\n}\r\n<\/pre>\n<p>\u306a\u304a\u3001\u6700\u521d\u306bmake_shared\u3060\u3051\u3057\u304b\u53d6\u308a\u4e0a\u3052\u306a\u304b\u3063\u305f\uff08<a href=\"\/egtra\/2013\/03\/17\/533\/\">\u914d\u5217\u7248shared_ptr\u3068\u975e\u914d\u5217\u7248shared_ptr\u3068\u306e\u5909\u63db<\/a>\uff09\u306e\u306f\u610f\u56f3\u7684\u306a\u3082\u306e\u3067\u3057\u305f\u3002\u3059\u306a\u308f\u3061\u3001\uff08\u914d\u5217\u306b\u9650\u3089\u305a\uff09\u57fa\u672c\u7684\u306b\u306fmake_shared\u3092\u4f7f\u3046\u3079\u304d\u3068\u3044\u3046\u8003\u3048\u306b\u3088\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<hr \/>\n<p>2013\u5e744\u670812\u65e5\u3001\u30b3\u30e1\u30f3\u30c8\u3067\u306e\u6307\u6458\u306b\u57fa\u3065\u304d\u3001\u672c\u6587\u306e\u4e00\u90e8\u3092\u4fee\u6b63\u3057\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u914d\u5217\u7248shared_ptr\u3092new[]\u3067\u521d\u671f\u5316\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[5],"tags":[45,243],"class_list":["post-545","post","type-post","status-publish","format-standard","hentry","category-cpp","tag-boost","tag-shared_ptr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - 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