29 lines
982 B
Python
Executable File
29 lines
982 B
Python
Executable File
#!/usr/bin/env python3
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# Copyright 2025 Google LLC
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import functools
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from typing import List
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class StringList(list):
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"""
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A hashable ordered list of strings.
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This can be used as the key for a dictionary.
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"""
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def __init__(self, strs: List[str]) -> None:
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super().__init__(strs)
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def __hash__(self) -> int: # type: ignore[override]
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return functools.reduce(lambda h, ir: hash((h, hash(ir))), self, 0)
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