Question 1

How do I bind a C++ class to Lua using sol2?

Accepted Answer

Use lua.new_usertype<YourClass> to register types with member variables and functions, as shown in the sneak peek examples. This allows Lua scripts to instantiate and manipulate C++ objects directly.

Question 2

Is sol2 better than luabind for performance?

Accepted Answer

Yes, sol2 is benchmarked as the fastest C++ Lua binding library, offering zero-overhead abstractions and modern C++ features, while luabind is older and may have more overhead. However, luabind might be preferred for legacy C++ codebases.

Question 3

Does sol2 work with LuaJIT and MoonJIT?

Accepted Answer

Yes, sol2 supports all Lua versions 5.1+, including LuaJIT 2.0+ and MoonJIT, ensuring compatibility with high-performance Lua implementations for JIT-compiled scripts.

Question 4

How to handle errors in sol2 protected functions?

Accepted Answer

Use sol::protected_function with an error-handling function or check return types; the API abstracts the C stack and provides safe ways to catch Lua errors in C++ code, as mentioned in the features.

Question 5

Can I use sol2 with CMake in my project?

Accepted Answer

Yes, sol2 includes CMake support for generating single headers and integrating into builds, as detailed in the README's section on creating a single header and testing.

Question 6

What are the memory management implications with smart pointers in sol2?

Accepted Answer

sol2 supports std::unique_ptr and std::shared_ptr, automatically managing lifetimes, but you must ensure proper ownership semantics to avoid leaks, especially when exposing C++ objects to Lua's garbage collection.

sol2

What is sol2?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions