{"id":3349,"date":"2018-02-02T23:07:56","date_gmt":"2018-02-02T22:07:56","guid":{"rendered":"http:\/\/roboblog.fatal-fury.de\/?p=3349"},"modified":"2018-02-05T15:12:16","modified_gmt":"2018-02-05T14:12:16","slug":"c-guns-generic-data-type-design-pattern-teil-3","status":"publish","type":"post","link":"http:\/\/roboblog.fatal-fury.de\/?p=3349","title":{"rendered":"C++ Guns: Generic Data Type Design Pattern - Teil 3"},"content":{"rendered":"<p>Im letzten Teil hatte ich das serialisieren angesprochen wie das z.B. mit der Qt Klasse (und andere) QDataStream m\u00f6glich ist.<\/p>\n<blockquote><p>A data stream is a binary stream of encoded information which is 100% independent of the host computer's operating system, CPU or byte order. For example, a data stream that is written by a PC under Windows can be read by a Sun SPARC running Solaris.<\/p><\/blockquote>\n<p>Da nach dem angesprochenen Entwurfsmuster jeder Datentyp von std::array oder std::tuple erbst, braucht es auch nur eine Serialisierungsfunktion f\u00fcr alle User defined Typen. Es fehlt nur eine M\u00f6glichkeit den Klassennamen automatisiert anzugeben. So ein bissel C++ reflektion fehlt leider, aber es sollte kein Problem sein den Klassennamen selbst hin zu schreiben,<\/p>\n<pre class=\"brush: cpp; title: ; notranslate\" title=\"\">\r\nstrcut UserType : public std::tuple&lt;int, double, std::string&gt;\r\n{\r\n  static const char* classname = &quot;UserType&quot;;\r\n}\r\n<\/pre>\n<p>So h\u00e4tte man eine M\u00f6glichkeit, User defined Datentypen automatisiert zu verarbeiten, da sie alle das selbe Interface haben. (Vom Typ std::array oder std::tuple sind).<br \/>\nEin netter Gedanke.<br \/>\nAber ich schweife etwas ab. Im vierten Teil versuche ich ein Anwendungsfall zu finden, bei dem dieses Muster nicht mehr passt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Im letzten Teil hatte ich das serialisieren angesprochen wie das z.B. mit der Qt Klasse (und andere) QDataStream m\u00f6glich ist. A data stream is a binary stream of encoded information which is 100% independent of the host computer's operating system, CPU or byte order. For example, a data stream that is written by a PC [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[17],"class_list":["post-3349","post","type-post","status-publish","format-standard","hentry","category-allgemein","tag-cpp"],"_links":{"self":[{"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/posts\/3349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3349"}],"version-history":[{"count":3,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/posts\/3349\/revisions"}],"predecessor-version":[{"id":3352,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/posts\/3349\/revisions\/3352"}],"wp:attachment":[{"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3349"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}