* add key abstraction and prepare for MVCC
Signed-off-by: Alex Chi <iskyzh@gmail.com>
* a little bit type exercise
Signed-off-by: Alex Chi <iskyzh@gmail.com>
* refactor tests
Signed-off-by: Alex Chi <iskyzh@gmail.com>
* fix clippy warnings
Signed-off-by: Alex Chi <iskyzh@gmail.com>
* refactor starter code
Signed-off-by: Alex Chi <iskyzh@gmail.com>
* final touch docs
Signed-off-by: Alex Chi <iskyzh@gmail.com>
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Signed-off-by: Alex Chi <iskyzh@gmail.com>