This tag should be used only on questions that are about Objective-C features or depend on code in the language.
What I want to do seems pretty simple, but I can't find any answers on the web. I have an …
ios objective-c sorting cocoa-touch nsmutablearrayI'm new to iOS and Objective-C and the whole MVC paradigm and I'm stuck with the following: I have a …
ios objective-c swift model-view-controller uiviewcontrollerI'm a Java head mainly, and I want a way to generate a pseudo-random number between 0 and 74. In Java I …
objective-c randomHow do I convert an NSString value to NSData?
ios objective-c nsstring nsdataI don't think I fundamentally understand what an enum is, and when to use it. For example: typedef enum { kCircle, …
objective-c enums typedefI'm developing a Cocoa application, and I'm using constant NSStrings as ways to store key names for my preferences. I …
ios objective-c cocoa nsstring constantsHow can I convert a NSString containing a number of any primitive data type (e.g. int, float, char, unsigned …
objective-c nsstring nsnumber primitive-typesI created a button and added an action for it, but as soon as it invoked, I got this error: …
objective-c selector unrecognized-selectorI read The Programming Language Swift by Apple in iBooks, but cannot figure out how to make an HTTP request (…
ios objective-c swift iphone nsurlsessionAn Xcode beginner's question: It is my first experience with Xcode 4.6.3. I am trying to write a very simple console …
objective-c xcode macos cocoa iobluetooth