Question 1

Should I use mrusty or rust-embed for adding scripting to my Rust app?

Accepted Answer

mrusty is specifically designed for Ruby scripting with safe bindings, while rust-embed is a general-purpose crate for embedding files. Choose mrusty if you need Ruby syntax and features, otherwise consider alternatives for non-Ruby scripting.

Question 2

How to expose a Rust struct to Ruby using mrusty?

Accepted Answer

Use the mrusty_class! macro to define the struct and its methods, then call mruby.def_file to make it requirable in mruby. The example in the README shows how to define a Container struct with initialize and value methods.

Question 3

Is mrusty compatible with Ruby 3.x?

Accepted Answer

No, mrusty is based on mruby and only supports Ruby 1.9 syntax and features. It will not work with Ruby 2.x or 3.x code that uses newer language constructs, limiting its use with modern Ruby projects.

Question 4

Can I use Ruby gems with mrusty?

Accepted Answer

mrusty uses mruby, which has a limited standard library and may not support all Ruby gems. You might need to port gems or find mruby-compatible alternatives, which can be challenging due to ecosystem differences.

Question 5

What are the performance implications of using mrusty in production?

Accepted Answer

Embedding mruby adds interpreter overhead, so for applications where performance is critical, this might not be ideal. However, for scripting, testing, or REPL tools, the trade-off is often acceptable if Ruby integration is needed.

Question 6

How does mrusty handle error handling between Rust and Ruby?

Accepted Answer

mrusty provides mechanisms for safe type conversion and error propagation. Errors in Ruby code can be caught and converted to Rust Result types, but proper error handling requires careful implementation to avoid panics or data loss.

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