Type Alias

Category

An opaque type that represents a category.

Declaration 宣言 

typealias Category = OpaquePointer

See Also 参照

Class-Definition Data Structures

typealias Method
An opaque type that represents a method in a class definition.
typealias Ivar
An opaque type that represents an instance variable.
typealias objc_property_t
An opaque type that represents an Objective-C declared property.
struct objc_method_description
Defines an Objective-C method.
struct objc_property_attribute_t
Defines a property attribute.