14 lines
347 B
Python
14 lines
347 B
Python
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# Copyright 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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def memoize(fn):
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'''Decorates |fn| to memoize.
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'''
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memory = {}
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def impl(*args):
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if args not in memory:
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memory[args] = fn(*args)
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return memory[args]
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return impl
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