Lecture Notes for April 22

Read for Today

• Sections 7.3, 7.4, 7.7, and 7.10.

Topics to Cover Today

• Records
  • heterogeneous, named data treated as a whole
  • in memory: offsets, padding, assignment, equality test
  • variant records: equality test, tag/discriminant
• Arrays (true arrays, not hashes!)
  • homogeneous, indexed data treated as a whole
  • zero-based, one-based, n-based?
  • multi-dimensional
• Pointers
• Garbage collection
  • reference counting