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Since backend.ID is always a slice of constant length, use an array instead of a slice. Mostly, arrays behave as slices, except that an array cannot be nil, so use `*backend.ID` insteaf of `backend.ID` in places where the absence of an ID is possible (e.g. for the Subtree of a Node, which may not present when the node is a file node). This change allows to directly use backend.ID as the the key for a map, so that arbitrary data structures (e.g. a Set implemented as a map[backend.ID]struct{}) can easily be formed. |
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doc.go | ||
pack_test.go | ||
pack.go |