dkp116 opened a new pull request, #50366:
URL: https://github.com/apache/arrow/pull/50366

   
   ### Rationale for this change
   
   ( #50310 ) Enhancement for ArrayData 
   
   ### What changes are included in this PR?
   Added GetSpan<T>(int i, int64_t length) for read-only typed access to 
ArrayData.
   Added GetMutableSpan<T>(int i, int64_t length) for writable typed access to 
ArrayData.
   
   ### Are these changes tested?
   New unit tests were added in array_test.cc:
   
   GetSpanRespectsOffset
   GetMutableSpanRespectsOffset
   
   The tests verify:
   
   correct slicing with offset
   correct span length
   correctness of data read through spans
   correctness of in-place mutation through GetMutableSpan
   


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