2014/10/15 下午 10:13:30

iphone Programming Glossary: rootnode

http://stackoverflow.com/questions/12147883/parsing-xml-from-nsstring-to-get-values

given line use the following snippet your input is passed as inXmlString transform string into an XML DOM RXMLElement rootNode RXMLElement elementFromXMLString inXmlString withEncoding NSUTF8StringEncoding if rootNode nil rootNode isValid do something.. an XML DOM RXMLElement rootNode RXMLElement elementFromXMLString inXmlString withEncoding NSUTF8StringEncoding if rootNode nil rootNode isValid do something we failed else NSString temperature rootNode attribute @ temperature NSString day rootNode.. RXMLElement rootNode RXMLElement elementFromXMLString inXmlString withEncoding NSUTF8StringEncoding if rootNode nil rootNode isValid do something we failed else NSString temperature rootNode attribute @ temperature NSString day rootNode attribute..

iphone+Difference between nil,NIL and null

http://stackoverflow.com/questions/5908936/iphonedifference-between-nil-nil-and-null

null value for arbitrary C pointers. For instance int pointerToInt NULL char pointerToChar NULL struct TreeNode rootNode NULL NSNull is a class for objects that represent null. In fact there 䏭 only one object namely the one returned by NSNull..

GCD, Threads, Program Flow and UI Updating

http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating

continuing and changing the button state. self performSelectorInBackground @selector createTreeFromNode withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree.. queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need to wait here until createTreeFromNode is finished. solveButton.enabled YES if numSolutions 0 solveButton.title @ Not.. continuing and changing the button state. self performSelectorInBackground @selector createTreeFromNode withObject rootNode NO do not wait or enable here. Need to wait here until createTreeFromNode is finished. solveButton.enabled YES A UI message..