Macro tag

macro_rules! tag {
    ($name:expr, $value:expr) => { ... };
}

Attach custom data to the current scope

Note: You could override the name of the function by passing a custom name

Example:

fn calc(number: u32, name: &str) {
    optick::event!();
    optick::tag!("number", number);
    optick::tag!("name", name);
	...
}