# Evidence: Immutable updates and indexing

Copy this template into your own portfolio and fill it after running your modified exercise.

## Evidence required

Keep original and updated arrays, a repeated-index integer reference, the whole-matrix replacement check, and compact-versus-fixed-shape outputs. Explain replacement, accumulation, and name rebinding.

- Command: `python3 phases/01-arrays/04-immutable-updates-and-indexing/code/main.py`
- Working directory: repository root
- Python / JAX / NumPy versions: 
- Hardware and device: 
- My prediction before running: 
- My change to the exercise: 
- Exit code and meaningful output: 
- Why the result supports or contradicts my prediction: 
- Checkpoint result: 
- Artifact link or saved filename: 
- Portfolio status: saved in local workspace