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@davesque
Created March 22, 2018 19:03
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Python 3.6.4 (default, Mar 14 2018, 11:02:01)
Type 'copyright', 'credits' or 'license' for more information
IPython 6.2.1 -- An enhanced Interactive Python. Type '?' for help.
In [1]: from functools import lru_cache
In [2]: class Adder:
...: def __init__(self, n):
...: self.n = n
...: @lru_cache()
...: def add(self, x):
...: print('executing...')
...: return x + self.n
...:
In [3]: add1 = Adder(1)
In [4]: add2 = Adder(2)
In [5]: add1.add(1)
executing...
Out[5]: 2
In [6]: add1.add(1)
Out[6]: 2
In [7]: add2.add(1)
executing...
Out[7]: 3
In [8]: add2.add(1)
Out[8]: 3
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