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Memory Management

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  1. What tools in Xcode help debug memory leaks or optimize memory usage?

1. Instruments — Leaks and Allocations

📌 How to Use?

  1. Open XcodeProductProfile (or Cmd + I).
  2. Select Leaks or Allocations and start profiling your app.

🔹 Leaks Instrument

  • Detects memory leaks (objects that are not deallocated).
  • Highlights leaked objects in red and shows their allocation stack trace.

🔹 Allocations Instrument

  • Tracks memory usage by showing:
  • Objects allocated and their sizes.
  • Retain count changes (useful for debugging retain cycles).
  • Heap memory growth over time.

✅ Use Case:

  • Detect retain cycles caused by strong references in closures or delegates.
  • Identify excessive memory allocations.

Problem with UITableViewCell Creation: The issue stems from creating a new UITableViewCell each time it's needed, leading to excessive memory allocations. This is inefficient because cells are being created and destroyed frequently when scrolling.

  • Solution: Reusing Cells

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