struct UnionEncoder<'a> {
encoders: Vec<FieldEncoder<'a>>,
array: &'a UnionArray,
}字段§
§encoders: Vec<FieldEncoder<'a>>§array: &'a UnionArraystruct UnionEncoder<'a> {
encoders: Vec<FieldEncoder<'a>>,
array: &'a UnionArray,
}encoders: Vec<FieldEncoder<'a>>§array: &'a UnionArray