update index.md

remove return value of GetApproximateSizes in index.md
This commit is contained in:
jl0x61 2020-07-14 19:32:03 +08:00
parent c46e79c760
commit 1754c12c54

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@ -478,7 +478,7 @@ leveldb::Range ranges[2];
ranges[0] = leveldb::Range("a", "c");
ranges[1] = leveldb::Range("x", "z");
uint64_t sizes[2];
leveldb::Status s = db->GetApproximateSizes(ranges, 2, sizes);
db->GetApproximateSizes(ranges, 2, sizes);
```
The preceding call will set `sizes[0]` to the approximate number of bytes of