What are the limitations of C++ running on the iPhone?

c++, iphone, objective-c

Solution

You can't code purely in C++. For one, the UIApplicationDelegate class every application needs to inherit is Objective-C.

However, nothing is stopping you from coding everything that isn't framework related in Objective-C++. You'll still need to use the Objective-C calls for UIKit and other frameworks, but all of your application logic can be in C++.

From the Objective-C++ section of the Objective-C programming guide, these are the main limitations:

Objective-C++ does not add C++ features to Objective-C classes, nor does it add Objective-C features to C++ classes. For example, you cannot use Objective-C syntax to call a C++ object, you cannot add constructors or destructors to an Objective-C object, and you cannot use the keywords this and self interchangeably. The class hierarchies are separate; a C++ class cannot inherit from an Objective-C class, and an Objective-C class cannot inherit from a C++ class. In addition, multi-language exception handling is not supported. That is, an exception thrown in Objective-C code cannot be caught in C++ code and, conversely, an exception thrown in C++ code cannot be caught in Objective-C code. For more information on exceptions in Objective-C, see “Exception Handling.”

Problem

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