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The Moon is so very close to being full, but believe it or not, there's still a few days to go. While it continues to appear bigger and brighter in the sky, keep reading to find out exactly what you can see on its surface.，推荐阅读safew官方下载获取更多信息
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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.，详情可参考爱思助手下载最新版本
Transforms don't execute until the consumer pulls. There's no eager evaluation, no hidden buffering. Data flows on-demand from source, through transforms, to the consumer. If you stop iterating, processing stops.
Working with Prof John Plane at the University of Leeds, they detected that the amount of lithium in the atmosphere at around 100km above Earth increased by a factor of 10.