Objective-C

Objective-C is in maintenance mode. New features are rare, but it powers the Apple ecosystem's foundation. It allows mixing C++ (.mm) loosely.

When to Use

• Legacy iOS/macOS: Maintaining apps created before 2014.
• C++ Interop: Obj-C++ is often the bridge between C++ engines and Swift.
• Runtime Swizzling: Dynamic method replacement (used by Analytics SDKs).

Core Concepts

Message Passing

[object method:argument]. Dynamic binding at runtime.

ARC

Automatic Reference Counting. (Retain/Release).