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func (*Transaction).NewIterator(slice *Range, ro *ReadOptions) Iterator

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NewIterator returns an iterator for the latest snapshot of the transaction. The returned iterator is not safe for concurrent use, but it is safe to use multiple iterators concurrently, with each in a dedicated goroutine. It is also safe to use an iterator concurrently while writes to the transaction. The resultant key/value pairs are guaranteed to be consistent.

Slice allows slicing the iterator to only contains keys in the given range. A nil Range.Start is treated as a key before all keys in the DB. And a nil Range.Limit is treated as a key after all keys in the DB.

The iterator must be released after use, by calling Release method.

Also read Iterator documentation of the leveldb/iterator package.

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