Commits
Sutou Kouhei authored 859c30d8550
ARROW-9336: [Ruby] Add support for missing keys in StructArrayBuilder Closes #7649 from kou/ruby-struct-array-builder-missing-fields Authored-by: Sutou Kouhei <kou@clear-code.com> Signed-off-by: Sutou Kouhei <kou@clear-code.com>