Returns a new instance of the receiving class.
SDKs
- iOS 2.0+
- macOS 10.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Objective-C Runtime
Declaration
+ (instancetype)alloc;
Return Value
A new instance of the receiver.
Discussion
The isa instance variable of the new instance is initialized to a data structure that describes the class; memory for all other instance variables is set to 0.
You must use an init... method to complete the initialization process. For example:
TheClass *newObject = [[TheClass alloc] init];
Do not override alloc to include initialization code. Instead, implement class-specific versions of init... methods.
For historical reasons, alloc invokes alloc.