horvatha
/ loose_transform.py
Last active
July 26, 2022 07:45
Loose transformation for pyrsistent. Similar to the transform method, but it works even if there are missing keys.
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| from typing import List, Callable, Union | |
| from pyrsistent import PVector, PMap, ny, freeze | |
| def loose_transform(structure: Union[PVector,PMap], path: List, command: Callable): | |
| if not path: | |
| return command(structure) if callable(command) else command | |
| key_spec = path[0] | |
| if not callable(key_spec): |