mojo/tools/mopy_internal/memoize.py - Issue 878933003: Move the apptest runner and parts of mopy to the public SDK.

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Side by Side Diff: mojo/tools/mopy_internal/memoize.py

Issue 878933003: Move the apptest runner and parts of mopy to the public SDK. (Closed) Base URL: https://github.com/domokit/mojo.git@master

Patch Set: Created 5 years, 10 months ago

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1 # Copyright 2014 The Chromium Authors. All rights reserved.	1 # Copyright 2014 The Chromium Authors. All rights reserved.

2 # Use of this source code is governed by a BSD-style license that can be	2 # Use of this source code is governed by a BSD-style license that can be

3 # found in the LICENSE file.	3 # found in the LICENSE file.

4	4

5 import sys	5 import sys

6	6

7 # pylint: disable=C0301	7 # pylint: disable=C0301

8 # Based on/taken from	8 # Based on/taken from

9 # http://code.activestate.com/recipes/578231-probably-the-fastest-memoization- decorator-in-the-/	9 # http://code.activestate.com/recipes/578231-probably-the-fastest-memoization- decorator-in-the-/

10 # (with cosmetic changes).	10 # (with cosmetic changes).

11 # pylint: enable=C0301	11 # pylint: enable=C0301

12 def memoize(f):	12 def memoize(f):

13 """Memoization decorator for a function taking a single argument."""	13 """Memoization decorator for a function taking a single argument."""

14 class Memoize(dict):	14 class Memoize(dict):

15 def __missing__(self, key):	15 def __missing__(self, key):

16 rv = self[key] = f(key)	16 rv = self[key] = f(key)

17 return rv	17 return rv

18 return Memoize().__getitem__	18 return Memoize().__getitem__

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