dynerr
macro_rules! check { ($x:expr) => { ... }; ($x:expr, $log:expr) => { ... }; }
Shortcut for .unwrap_or_else(|e| logged_panic!(e)) for DynResult.
If no file supplied then defaults to "event.log"
let i = check!(try_something()); let i = check!(try_something(), "test.log");