macro_rules! t { ($e:expr) => { ... }; ($e:expr, $extra:expr) => { ... }; }
Expand description
A helper macro to unwrap
a result except also print out details like:
- The file/line of the panic
- The expression that failed
- The error itself
This is currently used judiciously throughout the build system rather than
using a Result
with try!
, but this may change one day…