What's the difference between the atomic and nonatomic attributes?

What's the difference between the atomic and nonatomic attributes?

ios objective-c properties atomic nonatomic

objective-c

How do I sort an NSMutableArray with custom objects in it?

ios objective-c sorting cocoa-touch nsmutablearray

objective-c

How can I disable ARC for a single file in a project?

objective-c xcode automatic-ref-counting manual-retain-release

objective-c

How can I make a UITextField move up when the keyboard is present - on starting to edit?

ios objective-c uiscrollview uitextfield uikeyboard

objective-c

Passing data between view controllers

ios objective-c swift model-view-controller uiviewcontroller

objective-c

What is a typedef enum in Objective-C?

objective-c enums typedef

objective-c

Shortcuts in Objective-C to concatenate NSStrings

objective-c nsstring string-concatenation

objective-c

performSelector may cause a leak because its selector is unknown

ios objective-c memory-leaks automatic-ref-counting

objective-c

How do I call Objective-C code from Swift?

objective-c swift

objective-c

How do I check if a string contains another string in Objective-C?

ios objective-c string range substring

objective-c

How do I animate constraint changes?

ios objective-c animation autolayout ios6

objective-c

How do I convert an NSString value to NSData?

ios objective-c nsstring nsdata

objective-c

How to check iOS version?

ios objective-c

objective-c

How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?

ios objective-c grand-central-dispatch objective-c-blocks

objective-c

Constants in Objective-C

ios objective-c cocoa nsstring constants

objective-c