Jimexist commented on a change in pull request #492:
URL: https://github.com/apache/arrow-rs/pull/492#discussion_r656836314
##########
File path: arrow/src/compute/kernels/concat.rs
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@@ -57,6 +57,9 @@ pub fn concat(arrays: &[&Array]) -> Result<ArrayRef> {
return Err(ArrowError::ComputeError(
"concat requires input of at least one array".to_string(),
));
+ } else if arrays.len() == 1 {
+ let array = arrays[0];
+ return Ok(array.slice(0, array.len()));
Review comment:
sadly `Array` isn't cloneable
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