yevgenypats commented on code in PR #35307:
URL: https://github.com/apache/arrow/pull/35307#discussion_r1175764172
##########
go/arrow/schema.go:
##########
@@ -194,7 +194,11 @@ func (sc *Schema) WithEndianness(e endian.Endianness)
*Schema {
func (sc *Schema) Endianness() endian.Endianness { return sc.endianness }
func (sc *Schema) IsNativeEndian() bool { return sc.endianness ==
endian.NativeEndian }
func (sc *Schema) Metadata() Metadata { return sc.meta }
-func (sc *Schema) Fields() []Field { return sc.fields }
+func (sc *Schema) Fields() []Field {
+ fields := make([]Field, len(sc.fields))
+ copy(fields, sc.fields)
+ return fields
+}
Review Comment:
We can do that but currently all methods return copy of things - like
`Metadata` for example and `Field(i)` apart from this one (which also bit me in
our code as I wasn't expecting the returned value to change the internal state)
##########
go/arrow/schema.go:
##########
@@ -194,7 +194,11 @@ func (sc *Schema) WithEndianness(e endian.Endianness)
*Schema {
func (sc *Schema) Endianness() endian.Endianness { return sc.endianness }
func (sc *Schema) IsNativeEndian() bool { return sc.endianness ==
endian.NativeEndian }
func (sc *Schema) Metadata() Metadata { return sc.meta }
-func (sc *Schema) Fields() []Field { return sc.fields }
+func (sc *Schema) Fields() []Field {
+ fields := make([]Field, len(sc.fields))
+ copy(fields, sc.fields)
+ return fields
+}
Review Comment:
We can do that but currently all methods return copy of things - like
`Metadata` for example and `Field(i)` apart from this one (which also bitten me
in our code as I wasn't expecting the returned value to change the internal
state)
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