solutions/13_error_handling/errors6.rs

@@ -29,21 +29,6 @@ impl ParsePosNonzeroError {
     }
 }
 
-// As an alternative solution, implementing the `From` trait allows for the
-// automatic conversion from a `ParseIntError` into a `ParsePosNonzeroError`
-// using the `?` operator, without the need to call `map_err`.
-//
-// ```
-// let x: i64 = s.parse()?;
-// ```
-//
-// Traits like `From` will be dealt with in later exercises.
-impl From<ParseIntError> for ParsePosNonzeroError {
-    fn from(err: ParseIntError) -> Self {
-        ParsePosNonzeroError::ParseInt(err)
-    }
-}
-
 #[derive(PartialEq, Debug)]
 struct PositiveNonzeroInteger(u64);