Macro eztrace::trace

macro_rules! trace {
    () => { ... };
    ($($IT:expr),* $(,)*) => { ... };
    (@line) => { ... };
    (@fmt $($IT:expr),*) => { ... };
    (@fmtcode $_:expr) => { ... };
    (@stringify $HEAD:expr, $($IT:expr,)*) => { ... };
}

Prints out variables and their debug representation.

Non-Copy types do what you would hope.

Examples

Basic usage:

let a = 3;
let b = 4;
let c = 5;
trace!(a, b, c);
// a, b, c: 3 4 5
trace!(a * a + b * b, c * c);
// a * a + b * b, c * c: 25 25

To print just the file & line:

trace!();
// eztrace.rs:1