Make ``ttl`` argument optional.
authorhbc <bcxxxxxx@gmail.com>
Mon, 9 Feb 2015 14:32:30 +0000 (22:32 +0800)
committerhbc <bcxxxxxx@gmail.com>
Mon, 9 Feb 2015 14:44:48 +0000 (22:44 +0800)
commitfbeb6d37448e6e5e93f31c7a6fd93cac4531a13f
treeed81bb2a1cf2917286df65a0f9a2731bfbfc65d4
parenta17ec7ed651ba2b098a7fe279209c9554e13a20a
Make ``ttl`` argument optional.

Resolved #4.
cached_property.py
tests/test_cached_property.py
tests/test_threaded_cached_property.py