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Diffstat (limited to 'info.toml')
| -rw-r--r-- | info.toml | 52 |
1 files changed, 0 insertions, 52 deletions
@@ -1061,55 +1061,3 @@ path = "exercises/conversions/as_ref_mut.rs" mode = "test" hint = """ Add AsRef<str> as a trait bound to the functions.""" - -# ADVANCED ERRORS - -[[exercises]] -name = "advanced_errs1" -path = "exercises/advanced_errors/advanced_errs1.rs" -mode = "test" -hint = """ -This exercise uses an updated version of the code in errors6. The parsing -code is now in an implementation of the `FromStr` trait. Note that the -parsing code uses `?` directly, without any calls to `map_err()`. There is -one partial implementation of the `From` trait example that you should -complete. - -Details: The `?` operator calls `From::from()` on the error type to convert -it to the error type of the return type of the surrounding function. - -Hint: You will need to write another implementation of `From` that has a -different input type. -""" - -[[exercises]] -name = "advanced_errs2" -path = "exercises/advanced_errors/advanced_errs2.rs" -mode = "test" -hint = """ -This exercise demonstrates a few traits that are useful for custom error -types to implement. These traits make it easier for other code to consume -the custom error type. - -Follow the steps in the comment near the top of the file. You will have to -supply a missing trait implementation, and complete a few incomplete ones. - -You may find these pages to be helpful references: -https://doc.rust-lang.org/stable/rust-by-example/error/multiple_error_types/define_error_type.html -https://doc.rust-lang.org/stable/rust-by-example/error/multiple_error_types/boxing_errors.html -https://doc.rust-lang.org/stable/rust-by-example/error/multiple_error_types/wrap_error.html - -Hint: What trait must our error type have for `main()` to return the return -type that it returns? - -Another hint: It's not necessary to implement any methods inside the missing -trait. (Some methods have default implementations that are supplied by the -trait.) - -Another hint: Consult the tests to determine which error variants (and which -error message text) to produce for certain error conditions. - -Challenge: There is one test that is marked `#[ignore]`. Can you supply the -missing code that will make it pass? You may want to consult the standard -library documentation for a certain trait for more hints. -""" |