{"id":38,"date":"2011-03-10T09:26:56","date_gmt":"2011-03-10T15:26:56","guid":{"rendered":"http:\/\/til4code.wordpress.com\/?p=16"},"modified":"2011-03-10T09:26:56","modified_gmt":"2011-03-10T15:26:56","slug":"c-and-for-each","status":"publish","type":"post","link":"https:\/\/code.angelmarquez.com\/blog\/2011\/03\/10\/c-and-for-each\/","title":{"rendered":"TIL: About Visual Studio C++ and ‘for each in’"},"content":{"rendered":"

Most C++ developers are familiar using with for_each() when iterating over an STL collection. But a few months ago as I read a blog\u00a0post about the ‘auto’ keyword<\/a> over at Marc Gregoire’s Blog I was dumbstruck when saw the following example:<\/p>\n

[sourcecode language=”cpp”]
\nfor each (auto m in myMap)
\n{
\n tcout << _T("Map element ") << m.first << _T(": ");
\n for each(auto e in m.second)
\n {
\n tcout << _T("'") << e << _T("', ");
\n }
\n tcout << endl;
\n}
\n[\/sourcecode]<\/p>\n

What the heck was this ‘for each’<\/strong> without an underscore business? Apparently I’d been painfully unaware of this new syntax since 2004<\/a>!!! It’s Microsoft\/Visual Studio specific. But since my primary project is Windows-based through and through, you can bet I’ll be making use of this beauty to keep my code cleaner.<\/p>\n

-CM12<\/p>\n

PS. Do note, though, that this syntax automatically dereferences iterators, so it’s not useful if you need to do iterator manipulation.<\/p>\n","protected":false},"excerpt":{"rendered":"

Most C++ developers are familiar using with for_each() when iterating over an STL collection. But a few months ago as I read a blog\u00a0post about the ‘auto’ keyword over at Marc Gregoire’s Blog I was dumbstruck when saw the following example: [sourcecode language=”cpp”] for each (auto m in myMap) { tcout << _T("Map element ") […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[32,15,16],"class_list":["post-38","post","type-post","status-publish","format-standard","hentry","category-c","tag-c","tag-stl","tag-visual-studio"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/posts\/38","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/comments?post=38"}],"version-history":[{"count":0,"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/posts\/38\/revisions"}],"wp:attachment":[{"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/media?parent=38"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/categories?post=38"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/code.angelmarquez.com\/blog\/wp-json\/wp\/v2\/tags?post=38"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}