Maybe add DB.get_or_next() and DB.get_or_prev() API

[wbolster]

To avoid messing with iterators, the DB could have .get_or_next(...) and .get_or_prev(...) methods. In addition to the args already supported by the .get() method, it would also have include_key and include_value args.

Support for snapshots and prefixed databases sounds doable as well.

[wbolster]

Fwiw, the currently working alternative is something like next(db.iter(...), 'default-value').

[tlevine]

I have implemented this.

The following changes since commit 857ec9d:

Merge pull request #40 from felixonmars/master (2015-10-28 15:55:37 +0100)

are available in the git repository at:

git@github.com:tlevine/plyvel get-or

for you to fetch changes up to cc4327a:

fix get_or documentation (2016-03-16 16:21:38 +0000)

---

Thomas Levine (9):
example of get_or_{prev,next}
add include_key, include_value
test case for get_or
implement get_or
document get_or_next, get_or_prev
typos in test
handle None properly in test
remove partials
fix get_or documentation

doc/api.rst | 26 ++++++++++++++++++++++++++
get_or_example.py | 42 ++++++++++++++++++++++++++++++++++++++++++
plyvel/_plyvel.pyx | 23 +++++++++++++++++++++++
test/test_plyvel.py | 22 ++++++++++++++++++++++
4 files changed, 113 insertions(+)
create mode 100644 get_or_example.py