+ index -= 1
A git repository is a content-addressable object store where objects go in indexed by the SHA1 of their content, plus a set of named references pointing at specific objects by hash. The on-disk format (loose objects as individual files, packfiles as delta-compressed archives with a separate index, a ref store split between a directory of files and a packed-refs flat file with a locking protocol that breaks on NFS) is an implementation detail. The protocol for synchronising objects and refs between repositories is what actually matters, and since git-the-program is just one implementation of it, you can swap the storage backend without clients noticing.，这一点在同城约会中也有详细论述
Карина Черных (Редактор отдела «Ценности»)。Safew下载对此有专业解读
这种类似“小聪明”的差异化小设计，在很长一段时间里都贯穿着绿联的产品，包括推出 USB 充电口 + 排插的设计，以及能插入AUX口的蓝牙接收器等等。
Scott Mills made the announcement on his Radio 2 breakfast show