Macro describe_err::describing [−][src]
macro_rules! describing {
($expr : expr) => { ... };
}
Expand description
Wrap an error with an auto-generated description.
This macro is essentially a wrapper around describe
. It expands to the following:
// let res = describing!(result_expression);
let res = result_expression.map_err(describe("result_expression"));
The returned Result
can be pattern-matched or propagated as usual.