{"id":4415,"date":"2012-03-02T17:27:59","date_gmt":"2012-03-02T22:27:59","guid":{"rendered":"http:\/\/mjtsai.com\/blog\/?p=4415"},"modified":"2012-03-02T17:28:02","modified_gmt":"2012-03-02T22:28:02","slug":"key-value-observing-done-right-take-2","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2012\/03\/02\/key-value-observing-done-right-take-2\/","title":{"rendered":"Key-Value Observing Done Right: Take 2"},"content":{"rendered":"<p><a href=\"http:\/\/www.mikeash.com\/pyblog\/friday-qa-2012-03-02-key-value-observing-done-right-take-2.html\">Gwynne Raskind<\/a>:<\/p>\n<blockquote cite=\"http:\/\/www.mikeash.com\/pyblog\/friday-qa-2012-03-02-key-value-observing-done-right-take-2.html\"><p>In Mike Ash&rsquo;s article in 2008, circa Leopard, he described three major issues. Of those, only one has been solved since (the missing context parameter to observation removal). The other two, a lack of custom selectors and the uselessness of the context pointer, remain unsolved, and more issues have arisen since&#8230;<\/p>\n<p>[&#8230;]<\/p>\n<p>It is my personal opinion that KVO received so little attention because it was originally implemented as nothing more than a piece of the puzzle behind Cooca bindings. Cocoa bindings have been, in the opinion of many (including myself), a dismal failure in their intended purpose of making UI easy to wire up to code.<\/p>\n<\/blockquote>\n<p>What follows is much cleverness, but this is really something that Apple should address in Cocoa itself.<\/p>","protected":false},"excerpt":{"rendered":"<p>Gwynne Raskind: In Mike Ash&rsquo;s article in 2008, circa Leopard, he described three major issues. Of those, only one has been solved since (the missing context parameter to observation removal). The other two, a lack of custom selectors and the uselessness of the context pointer, remain unsolved, and more issues have arisen since&#8230; [&#8230;] It [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"","apple_news_api_id":"","apple_news_api_modified_at":"","apple_news_api_revision":"","apple_news_api_share_url":"","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-4415","post","type-post","status-publish","format-standard","hentry","category-programming-category"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/4415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=4415"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/4415\/revisions"}],"predecessor-version":[{"id":4416,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/4415\/revisions\/4416"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=4415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=4415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=4415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}