mirror of
https://github.com/rust-lang/rustlings.git
synced 2026-08-14 14:26:56 +00:00
68f8369cb4
- file_io3: replace the hardcoded expected file size (117) with SAMPLE_TEXT.len(), so the check is derived from the actual content instead of an unexplained magic number. - file_io3: use create_dir_all instead of create_dir, and add a sample_file_path() helper shared by main/create_required_files/ file_cleanup to avoid three separate ad-hoc path constructions. - file_io1/file_io2: hoist the sample text into a SAMPLE_TEXT constant used by both the exercise and its solution, removing duplicated literals. No behavioral change: all three solutions were rebuilt and run locally, producing identical output (file size still 117, permissions still non-readonly) with no leftover files.
Exercise to Book Chapter mapping
| Exercise | Book Chapter |
|---|---|
| variables | §3.1 |
| functions | §3.3 |
| if | §3.5 |
| primitive_types | §3.2, §4.3 |
| vecs | §8.1 |
| move_semantics | §4.1-2 |
| structs | §5.1, §5.3 |
| enums | §6, §19.3 |
| strings | §8.2 |
| modules | §7 |
| hashmaps | §8.3 |
| options | §10.1 |
| error_handling | §9 |
| generics | §10 |
| traits | §10.2 |
| lifetimes | §10.3 |
| tests | §11.1 |
| iterators | §13.2-4 |
| smart_pointers | §15, §16.3 |
| threads | §16.1-3 |
| macros | §20.5 |
| clippy | Appendix D |
| conversions | n/a |