WebMar 30, 2009 · To declare class functions in Objective-C you use the + prefix instead of - so your implementation would look something like: // Foo.h @interface Foo { } + (NSDictionary *)dictionary; // Foo.m + (NSDictionary *)dictionary { static NSDictionary *fooDict = nil; if (fooDict == nil) { // create dict } return fooDict; } Share Improve this answer
xcode - lightweight generics in objective c - Stack Overflow
WebAug 21, 2014 · First of all, notice that you repeatedly call [itemDicto objectForKey:@"id"] and [[itemDicto objectForKey:@"value"] boolValue].Let's pull those out and store it as a NSString* and BOOL, respectively.. Also, let's change every if after the first one into an else if to speed up execution via short-circuiting. That means that if the first one is true, we … WebmyDictionary : TDictionary; bool found = myDictionary.TryGetValue (myWord, currentValue); if (found) { myDictionary.AddOrSetValue (myWord, currentValue+1); } else { myDictionary.Add (myWord,1); } How can I do it in objective-c? Is there equivalent functions to the above mentioned AddOrSetValue () or TryGetValue ()? … how is the brigance assessment implemented
key value observing - initWithDictionary: in Objective-C and …
WebThe Objective-C programming language provides a keyword called typedef, which you can use to give a type a new name. Following is an example to define a term BYTE for one-byte numbers − typedef unsigned char BYTE; After this type definition, the identifier BYTE can be used as an abbreviation for the type unsigned char, for example:. BYTE b1, b2; WebMay 6, 2010 · More recent versions of Objective-C and Clang have a modern syntax for this: if (myDictionary [myKey]) { } You do not have to check for equality with nil, because only non-nil Objective-C objects can be stored in dictionaries (or arrays). And all Objective-C objects are truthy values. Even @NO, @0, and [NSNull null] evaluate as true. WebSep 17, 2014 · About Objective-C. Objective-C is the primary programming language you use when writing software for OS X and iOS. It’s a superset of the C programming … how is the breadboard connected