Comment by rubiquity

Thank you for replying. I do not have any experience with C++ so that's why this could be so confusing to me. I'm a weekend wannabe systems programmer (it's therapy after a long week of Web development) and was attracted to Rust from Ruby because C scares me (this is where Go users laugh that Rust attracted a Rubyist instead of a C++ user). I'll have to research C++ lambdas some more but given the safety, usability and performance gains that you mention this new implementation of closures seems impressive.