Question 1

How to embed Hobbes in a C++ application for dynamic scripting?

Accepted Answer

Include the Hobbes headers, link against libhobbes.a, and use the `hobbes::cc` class to compile and evaluate expressions. The README provides a basic shell example with error handling.

Question 2

Hobbes vs Lua for embedded scripting in C++?

Accepted Answer

Hobbes offers tighter C++ integration and a JIT compiler for better performance with complex types, but Lua is lighter and has a larger ecosystem for simple scripts. Choose Hobbes for performance-critical, type-safe dynamic evaluation.

Question 3

Can Hobbes be used to build a REST API or web server?

Accepted Answer

While possible with networking features, Hobbes isn't designed for web development; it's best for backend C++ systems like financial or monitoring tools where high-speed data processing is key.

Question 4

How to secure Hobbes when allowing remote code execution over RPC?

Accepted Answer

Hobbes has no built-in security, so use it only in trusted internal networks. The README warns against exposing it externally without additional isolation layers.

Question 5

What's the performance impact of JIT compilation on real-time systems?

Accepted Answer

Compilation adds latency, but LLVM optimizes it, and cached functions reduce overhead. For real-time, pre-compile critical expressions or batch evaluations.

Question 6

How to parse custom log files with Hobbes grammars?

Accepted Answer

Define an LALR(1) grammar using the `parse` syntax, similar to yacc, and embed the parser in C++ to process text data efficiently, as shown in the parsing section.

hobbes

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