Update errors6.rs

exercises/13_error_handling/errors6.rs

@@ -9,8 +9,6 @@
 // Execute `rustlings hint errors6` or use the `hint` watch subcommand for a
 // hint.
 
-// I AM NOT DONE
-
 use std::num::ParseIntError;
 
 // This is a custom error type that we will be using in `parse_pos_nonzero()`.
@@ -34,7 +32,16 @@ impl ParsePosNonzeroError {
 fn parse_pos_nonzero(s: &str) -> Result<PositiveNonzeroInteger, ParsePosNonzeroError> {
     // TODO: change this to return an appropriate error instead of panicking
     // when `parse()` returns an error.
-    let x: i64 = s.parse().unwrap();
+
+    // Solution 1:
+    // let x: i64 = match s.parse::<i64>() {
+    //     Ok(x) => x,
+    //     Err(e) => return Err(ParsePosNonzeroError::ParseInt(e)),
+    //   };
+
+    // Solution 2:
+    let x: i64 = s.parse().map_err(ParsePosNonzeroError::from_parseint)?;
+    
     PositiveNonzeroInteger::new(x).map_err(ParsePosNonzeroError::from_creation)
 }