Move and Copy Constructors

MediumPython

Problem

In Luxoft Singapore automotive cockpit integration code, components may duplicate a mutable resource or transfer its ownership. Implement both behaviors through a command processor.

A copy operation must create an independent deep copy of a source buffer. Later mutations to either buffer must not affect the other. A move operation must transfer the source buffer's underlying list to the destination in O(1) time, then leave the source in a valid empty state. The destination name is guaranteed not to exist before the operation.

Formal Specification

Implement manage_buffers(initial, operations).

initial is a dictionary mapping unique string names to lists of integers.
operations is a list of commands:
- ['copy', source, destination]
- ['move', source, destination]
- ['append', name, value]
- ['clear', name]
Every referenced buffer exists when used.
Return a dictionary containing every buffer name created or present during execution, including moved-from sources. Values must be the final integer lists.
Do not use serialization or a whole-state deep copy for every command.

Constraints

1 <= len(initial) <= 10^4
0 <= len(operations) <= 10^5
0 <= len(initial[name]) <= 10^4
-10^9 <= value <= 10^9
Destination names are unique and do not already exist
All operations are valid

Function Signature

def manage_buffers(initial, operations):

In Luxoft Singapore automotive cockpit integration code, components may duplicate a mutable resource or transfer its ownership. Implement both behaviors through a command processor.

Formal Specification

Implement manage_buffers(initial, operations).

initial is a dictionary mapping unique string names to lists of integers.
operations is a list of commands:
- ['copy', source, destination]
- ['move', source, destination]
- ['append', name, value]
- ['clear', name]
Every referenced buffer exists when used.
Return a dictionary containing every buffer name created or present during execution, including moved-from sources. Values must be the final integer lists.
Do not use serialization or a whole-state deep copy for every command.