LLDB
LLDB is a high-performance debugger built as a set of reusable components that leverage existing libraries in the larger LLVM project. It is primarily used for debugging programs written in C, C++, Objective-C, and Swift, providing features like breakpoints, stepping through code, and inspecting variables. LLDB is the default debugger in Xcode for macOS and iOS development and is also available on Linux and other platforms.
Developers should learn LLDB when working on low-level or system programming in C/C++ or Swift, especially for macOS/iOS development where it integrates seamlessly with Xcode. It is essential for debugging complex issues like memory corruption, concurrency problems, or performance bottlenecks in native applications. LLDB's scriptability and extensibility make it valuable for automating debugging tasks or integrating with custom toolchains.