Macro hygiene is the concept of macros that work in all contexts; they don't affect and aren't affected by anything around them. Ideally all macros would be fully hygienic, but there are lots of pitfalls and traps that make it all too easy to accidentally write unhygienic macros. This guide attempts to provide a comprehensive resource for writing the most hygienic macros.
First, a little aside on the details of Rust's module system, and specifically paths; it is
| // Suppose you have a variable named `future` which implements the `Future` trait. | |
| let future: impl Future = ...; | |
| // This gist demonstrates how to run the future until completion using the `stdweb` crate. | |
| // The various imports. | |
| extern crate futures; | |
| extern crate stdweb; |
Orthodox C++ (sometimes referred as C+) is minimal subset of C++ that improves C, but avoids all unnecessary things from so called Modern C++. It's exactly opposite of what Modern C++ suppose to be.
