Rich-T-kid commented on PR #10094:
URL: https://github.com/apache/arrow-rs/pull/10094#issuecomment-4676047646
the issue with just slicing the run_ends but not mutating it is that the
resulting logical array is incorrect. for example
```
sliced = {run_ends: [5,8], values:["b","a"], offset = 3, length = 5}
```
represents
```
[b,b,b,b,b,a,a,a]
```
which is not the correct slice of the original array.
Im not sure if I understood the point you were making.
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