andygrove opened a new issue, #3313:
URL: https://github.com/apache/arrow-datafusion/issues/3313
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
```
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/from_slice.rs":68
length_so_far += OffsetSize::from_usize(s.len()).unwrap();
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/pyarrow.rs":70
self.to_pyarrow(py).unwrap()
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":442
let array = $array.as_any().downcast_ref::<$ARRAYTYPE>().unwrap();
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":455
let array = $array.as_any().downcast_ref::<$ARRAYTYPE>().unwrap();
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":543
_ => panic!("Incompatible ScalarValue for list"),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":566
_ => panic!("Incompatible ScalarValue for list"),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":604
let array = $array.as_any().downcast_ref::<$ARRAYTYPE>().unwrap();
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":730
_ => panic!("Cannot run arithmetic negate on scalar value: {:?}",
self),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":892
sv => panic!(
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":900
sv => panic!(
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1095
panic!("Expected inner key type of {} but found:
{}, value was ({:?})", key_type, inner_key_type, scalar);
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1119
_ => unreachable!("Invalid dictionary keys type: {:?}",
key_type),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1151
_ => unreachable!(),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1165
_ => unreachable!(),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1244
.unwrap()
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1370
.unwrap(),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1444
_ => unreachable!("Invalid dictionary keys type: {:?}",
key_type),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1457
let array = array.as_any().downcast_ref::<Decimal128Array>().unwrap();
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1572
_ => unreachable!("Invalid dictionary keys type: {:?}",
key_type),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1605
array.as_any().downcast_ref::<FixedSizeListArray>().unwrap();
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1642
let array = array.as_any().downcast_ref::<Decimal128Array>().unwrap();
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1711
ScalarValue::List(_, _) => unimplemented!(),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1742
ScalarValue::Struct(_, _) => unimplemented!(),
"/home/andy/git/apache/arrow-datafusion/datafusion/common/src/scalar.rs":1753
_ => unreachable!("Invalid dictionary keys type: {:?}",
key_type),
```
**Describe the solution you'd like**
Use `Result` instead
**Describe alternatives you've considered**
None
**Additional context**
List generated by https://github.com/andygrove/no-need-to-panic
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