Macro slash_formatter::slash_in_place

macro_rules! slash_in_place {
    () => { ... };
    ($s:expr $(, $sc:expr)* $(,)*) => { ... };
}

Concatenate multiple strings with slashes. It can also be used to get the literal '/'.

#[macro_use] extern crate slash_formatter;

let mut s = String::from("path");

slash_in_place!(&mut s, "to/", "/file/");

assert_eq!("path/to/file", s);