{"id":37,"date":"2008-11-23T13:36:19","date_gmt":"2008-11-23T17:36:19","guid":{"rendered":"httpss:\/\/www.powenko.com\/blog\/?p=37"},"modified":"2009-11-23T11:33:55","modified_gmt":"2009-11-23T15:33:55","slug":"objective-c-iphone-oop-public-privateprotected-value","status":"publish","type":"post","link":"https:\/\/www.powenko.com\/wordpress\/?p=37","title":{"rendered":"objective-c, iphone, oop, public, private,protected value."},"content":{"rendered":"<p>#Access Privledges<\/p>\n<p>* The default access is @protected, if you don&#8217;t add any public, or private.<br \/>\n* Java implements this with public\/private\/protected modifiers infront of methods and variables. Objective-C&#8217;s approach is much more similar to C++&#8217;s for instance variables<br \/>\n* Access.h<br \/>\n*. access data must used &#8220;-&gt;&#8221; cannot use &#8220;.&#8221;, compiler will has problem.<\/p>\n<pre name=\"code\" class=\"c-sharp\">\r\n#import \r\n\r\n@interface Access: NSObject {\r\n@public\r\nint publicVar;\r\n@private\r\nint privateVar;\r\nint privateVar2;\r\n@protected\r\nint protectedVar;\r\n}\r\n@end\r\n<\/pre>\n<p>* Access.m<\/p>\n<pre name=\"code\" class=\"c-sharp\">\r\n#import \"Access.h\"\r\n\r\n@implementation Access\r\n@end\r\n\r\n* main.m\r\n\r\n#import \"Access.h\"\r\n#import\r\n\r\nint main( int argc, const char *argv[] ) {\r\nAccess *a = [[Access alloc] init];\r\n\r\n\/\/ works\r\na-&gt;publicVar = 5;\r\nprintf( \"public var: %i\\n\", a-&gt;publicVar );\r\n\r\n\/\/ doesn't compile\r\n\/\/a-&gt;privateVar = 10;\r\n\/\/printf( \"private var: %i\\n\", a-&gt;privateVar );\r\n\r\n\/\/ doesn't compile\r\n\/\/a.privateVar = 10;\r\n\/\/printf( \"private var: %i\\n\", a.privateVar );\r\n\r\n<\/code>\r\n\r\n [a release];\r\nreturn 0;\r\n}\r\n<\/pre>\n<p>* output<\/p>\n<p>public var: 5<\/p>\n","protected":false},"excerpt":{"rendered":"<p>#Access Privledges * The default access is @protected,  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-37","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/37"}],"collection":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=37"}],"version-history":[{"count":0,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/37\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=37"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=37"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}