tustvold commented on code in PR #4962:
URL: https://github.com/apache/arrow-rs/pull/4962#discussion_r1366857818
##########
arrow-schema/src/fields.rs:
##########
@@ -83,6 +87,16 @@ impl Fields {
.zip(other.iter())
.all(|(a, b)| Arc::ptr_eq(a, b) || a.contains(b))
}
+
+ pub fn reverse(&mut self) {
+ let new_fields: Vec<FieldRef> = self.iter().rev().map(|f| f.clone() as
FieldRef).collect();
+ self.0 = Arc::new(new_fields);
+ }
+
+ pub fn push(&mut self, field: Field) {
Review Comment:
This will be extremely inefficient, performing multiple allocations each
time, I would recommend using
https://docs.rs/arrow-schema/latest/arrow_schema/struct.SchemaBuilder.html
instead
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