Function demo_dict_migration

python/examples/migration_guide.py:19–64

Show how to migrate from regular dict to BPlusTree.

()

def demo_dict_migration():
    """Show how to migrate from regular dict to BPlusTree."""
    print("=== Migrating from dict to BPlusTree ===\n")

    print("BEFORE (using dict):")
    print("```python")
    print("# Original dict-based code")
    print("data = {}")
    print("data[1] = 'apple'")
    print("data[3] = 'cherry'")
    print("data[2] = 'banana'")
    print("print(f'Length: {len(data)}')")
    print("print(f'Value: {data[2]}')")
    print("print(f'Keys: {list(data.keys())}')")
    print("```")

    # Original dict code
    data = {}
    data[1] = "apple"
    data[3] = "cherry"
    data[2] = "banana"
    print(
        f"Dict output - Length: {len(data)}, Value: {data[2]}, Keys: {list(data.keys())}"
    )

    print("\nAFTER (using BPlusTree):")
    print("```python")
    print("# Migrated to BPlusTree - MINIMAL CHANGES!")
    print("data = BPlusTreeMap()  # Only change: constructor")
    print("data[1] = 'apple'      # Same syntax")
    print("data[3] = 'cherry'     # Same syntax")
    print("data[2] = 'banana'     # Same syntax")
    print("print(f'Length: {len(data)}')")
    print("print(f'Value: {data[2]}')")
    print("print(f'Keys: {list(data.keys())}')")
    print("```")

    # BPlusTree equivalent
    data = BPlusTreeMap()
    data[1] = "apple"
    data[3] = "cherry"
    data[2] = "banana"
    print(
        f"BPlusTree output - Length: {len(data)}, Value: {data[2]}, Keys: {list(data.keys())}"
    )
    print("✓ Keys are now automatically sorted!")


def demo_sorteddict_migration():