tustvold commented on code in PR #4962:
URL: https://github.com/apache/arrow-rs/pull/4962#discussion_r1368618525
##########
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:
I'm suggesting not adding these methods to Schema and instead using
SchemaBuilder instead where you were intending to use them.
As you've discovered Schema, like the arrays, is not designed to be mutated
in place, especially given it is normally wrapped in an Arc itself as a
SchemaRef
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