[issue13227] Option to make the lru_cache type specific

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

The patch doesn't update the doc. You may also test type(square(3)). Except of these nits, the patch looks good.

The typed option is an important feature, and your patch contains a good example of its usage (the re module).

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nosy: +haypo

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<http://bugs.python.org/issue13227>
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