>there is still function/method call overhead for basic operations (+-/*). For high volume stuff she's talking about, it adds up, fast. With the right style of

>there is still function/method call overhead for basic operations (+-/*). For high volume stuff she's talking about, it adds up, fast. With the right style of C++ programming (trait/templated focused instead of inheritance) or Rust's static-dispatch-by-default it should be no more of a performance impact than 'native' Cobol calls after the compiler optimizes it.