Macro trackable::track_try
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[src]
macro_rules! track_try { ($expr:expr $(, $arg:tt)*) => { ... }; }
Error trackable variant of the standard try!
macro.
Conceptually, track_try!(expr)
is equivalent to the following code:
expr.map_err(|e| { // Converts to a trackable error. let e = trackable::error::TrackableError::from_cause(e); // Saves this location in the history of `e`. track!(e) })?;
Like trace!
macro, it is also possible to leave a message in this location:
let arg = 0; track_try!(try_something(arg), "Failed; The value of `arg` was {:?}", arg);