{"id":1027,"date":"2011-01-18T17:29:27","date_gmt":"2011-01-18T22:29:27","guid":{"rendered":"http:\/\/bitpost.com\/news\/?p=1027"},"modified":"2013-06-07T20:34:04","modified_gmt":"2013-06-08T01:34:04","slug":"c-delegates","status":"publish","type":"post","link":"https:\/\/bitpost.com\/news\/2011\/c-delegates\/","title":{"rendered":"C++ delegates"},"content":{"rendered":"<p>Just a quick note: I feel like I&#8217;ve accomplished a lot today just because I READ <a href=\"http:\/\/www.codeproject.com\/KB\/cpp\/FastDelegate.aspx\">this article<\/a>.  Nice bomb drop.  We&#8217;ll see what I do with it&#8230; I think it&#8217;s a bit too crunchy to put into use &#8211; I don&#8217;t feel like dealing with any gotchas on all the versions of all the compilers I&#8217;m using, as there are a LOT these days.  But it has lead me to research other progress in the C++ standard.  The <a href=\"http:\/\/www.boost.org\/doc\/libs\/1_45_0\/doc\/html\/function.html\">boost function library<\/a>, which has been accepted into TR1, is already available in some compiler spaces, whoop.  <\/p>\n<p>I started down this path because I wanted to store a predicate function in my sorted_vector class.  For now I can get by without this stuff, always passing in a functor to the function calls that need it, but that&#8217;s not as elegant.<\/p>\n<p>Meanwhile, it&#8217;s upwards and onwards with QT slots and signals &#8211; QT is getting the job done for me in a major way.  There are boost::signal and boost::bind as alternatives to that, but I&#8217;m really kicking out the jams with QT, so I&#8217;m not stopping now.  More to come soon, hopefully.<\/p>\n<p><strong>UPDATE<\/strong>: <a href=\"http:\/\/en.wikipedia.org\/wiki\/C%2B%2B0x\">C++0x<\/a> is hopefully coming soon.  Wikipedia, as usual, gives a nice overview and some nice guidance.  In particular, I need to avoid std::auto_ptr and function object base classes (std::unary_function, std::binary_function) which are <a href=\"http:\/\/en.wikipedia.org\/wiki\/C%2B%2B0x#Features_to_be_removed_or_deprecated\">slated for removal<\/a>(!).  Sounds like I need to keep my eye out for <a href=\"http:\/\/en.wikipedia.org\/wiki\/C%2B%2B0x#Polymorphic_wrappers_for_function_objects\">polymorphic wrappers for function objects<\/a>, they may be just the ticket I need.  Check out the whole standard, it&#8217;s juicy!  :><\/p>\n<p><strong>UPDATE 2<\/strong>: <a href=\"http:\/\/www.codeproject.com\/KB\/cpp\/Sort.aspx\">Here<\/a> is a nice rundown of options for the sort predicate function, leading into the C++0x solution.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Just a quick note: I feel like I&#8217;ve accomplished a lot today just because I READ this article. Nice bomb drop. We&#8217;ll see what I do with it&#8230; I think it&#8217;s a bit too crunchy to put into use &#8211; I don&#8217;t feel like dealing with any gotchas on all the versions of all the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[22],"tags":[37,31,38,29,30,36],"class_list":["post-1027","post","type-post","status-publish","format-standard","hentry","category-cpp","tag-c0x","tag-data-structures","tag-delegates","tag-sorted_vector","tag-stl","tag-tr1"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9M11L-gz","jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/posts\/1027","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/comments?post=1027"}],"version-history":[{"count":9,"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/posts\/1027\/revisions"}],"predecessor-version":[{"id":1625,"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/posts\/1027\/revisions\/1625"}],"wp:attachment":[{"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/media?parent=1027"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/categories?post=1027"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bitpost.com\/news\/wp-json\/wp\/v2\/tags?post=1027"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}