Source code for cacheout.lifo

"""The lifo module provides the :class:`LIFOCache` (Last-In, First-Out) class."""

import typing as t

from .cache import Cache




class LIFOCache(Cache):
    """
    The Last-In, First-Out (LIFO) cache is like :class:`.Cache` but uses a last-in, first-out
    replacement policy.

    The primary difference with :class:`.Cache` is that cache entries are evicted from the end of
    the eviction queue first instead of evicting from the beginning, i.e., the last entry that was
    added to the cache is the first entry to be removed.
    """

    def __next__(self) -> t.Hashable:
        return next(reversed(self._cache))