{"id":1645,"date":"2007-02-28T12:00:03","date_gmt":"2007-02-28T15:00:03","guid":{"rendered":"http:\/\/brockerhoff.net\/bb\/viewtopic.php?p=2102"},"modified":"2010-05-08T17:56:55","modified_gmt":"2010-05-08T20:56:55","slug":"cocoa-quickie","status":"publish","type":"post","link":"https:\/\/brockerhoff.net\/blog\/2007\/02\/28\/cocoa-quickie\/","title":{"rendered":"Cocoa quickie"},"content":{"rendered":"<p><a href=\"http:\/\/borkware.com\/quickies\/\">Borkware Quickies<\/a> is a highly recommended collection of small, useful code snippets. <a href=\"http:\/\/borkware.com\/pages\/people\">Mark Dalrymple<\/a> has been so kind to post one of my own there: <a href=\"http:\/\/borkware.com\/quickies\/single?id=352\">&#8220;Making naked memory autoreleased&#8221;<\/a>. Here&#8217;s a shorter and even more useful, though sometimes slower, version:<\/p>\n<pre><code>static void* tempCopyOf(void* data,UInt32 size) {\r\n\u00a0 \u00a0void* buffer = calloc(1,size);\r\n\u00a0 \u00a0if (buffer) {\r\n\u00a0 \u00a0\u00a0 \u00a0if (data) bcopy(data,buffer,size);\r\n\u00a0 \u00a0\u00a0 \u00a0[NSData dataWithBytesNoCopy:buffer length:size freeWhenDone:YES];\r\n\u00a0 \u00a0}\r\n\u00a0 \u00a0return buffer;\r\n}<\/code><\/pre>\n<p>So, you can call this as:<\/p>\n<pre><code>void* thing = tempCopyOf(&amp;myStructure,sizeof(myStructure));<\/code><\/pre>\n<p>which will give you a temporary copy of myStructure, or as<\/p>\n<pre><code>void* thing = tempCopyOf(NULL,someSize);<\/code><\/pre>\n<p>which will return a zero-filled buffer of someSize for you to fill in as you want.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Borkware Quickies is a highly recommended collection of small, useful code snippets. Mark Dalrymple has been so kind to post one of my own there: &#8220;Making naked memory autoreleased&#8221;. Here&#8217;s a shorter and even more useful, though sometimes slower, version: static void* tempCopyOf(void* data,UInt32 size) { \u00a0 \u00a0void* buffer = calloc(1,size); \u00a0 \u00a0if (buffer) { [&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":""},"categories":[4,19],"tags":[26,23],"class_list":["post-1645","post","type-post","status-publish","format-standard","hentry","category-dev","category-software","tag-cocoa","tag-mac"],"featured_image_src":null,"author_info":{"display_name":"Rainer Brockerhoff","author_link":"https:\/\/brockerhoff.net\/blog\/author\/rbrockerhoff\/"},"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1q3Zc-qx","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/posts\/1645","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/comments?post=1645"}],"version-history":[{"count":0,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/posts\/1645\/revisions"}],"wp:attachment":[{"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/media?parent=1645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/categories?post=1645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/tags?post=1645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}