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📜 WAYPOINT LESSON

Checkpoint — Files

⭐ beginner⏳ 20 min read📍 Lesson 57 of 85

A notes store: append, load with a lenient corrupt-line policy, and search — durable across process restarts.

Checkpoint: the notes store

Task: implement in Solution a tiny notes store over id|title|body lines:

  1. static int SaveNote(string path, int nextId, string title, string body) — appends nextId|title|body as one line and returns nextId + 1 (the caller's running id).
  2. static List<(int Id, string Title, string Body)> LoadNotes(string path) — parses the file; malformed lines skipped; missing file → empty list.
  3. static List<(int Id, string Title, string Body)> Search(List<(int Id, string Title, string Body)> notes, string term) — notes whose title OR body contains term (case-insensitive), preserving order.