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Jorge C. Leitao authored and Neville Dipale committed a764d3bafaa
ARROW-10332: [Rust] Allow CSV reader to iterate from start up to end This PR proposes the following changes: 1. Make the CSV reader accept an optional argument to bound its iteration 2. Simplify the `next` code via iterators 3. Add a new struct to perform buffered iterations (useful to any reader) Closes #8482 from jorgecarleitao/csv_many Authored-by: Jorge C. Leitao <jorgecarleitao@gmail.com> Signed-off-by: Neville Dipale <nevilledips@gmail.com>