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Antoine Pitrou authored and Benjamin Kietzman committed b665b4731a2
ARROW-8361: [C++] Add Result<T> APIs to Buffer methods and functions Closes #6863 from pitrou/ARROW-8361-buffer-result-apis Authored-by: Antoine Pitrou <antoine@python.org> Signed-off-by: Benjamin Kietzman <bengilgit@gmail.com>