Module 5Collections LabLesson 8 of 815 min
Module 4 Review Checklist
Counters with HashMap and self-check.
Self-check
- Vec push/iterate?
- map/filter/collect?
- HashMap entry aggregate?
- When BTreeMap wins?
Mini: trade counts
Challenge
Sort symbols alphabetically when printing.
Tips
- Review before rushing
- entry for counters
- {:?} debug maps
Try it live
Module 4 Review ChecklistRust 2021
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Output
Press Run to compile and execute.