Method column_names

arrow-array/src/array/struct_array.rs:300–308

Return field names in this struct array

(&self)

    /// Return field names in this struct array
    pub fn column_names(&self) -> Vec<&str> {
        match self.data_type() {
            DataType::Struct(fields) => fields
                .iter()
                .map(|f| f.name().as_str())
                .collect::<Vec<&str>>(),
            _ => unreachable!("Struct array's data type is not struct!"),
        }
    }

    /// Returns the [`Fields`] of this [`StructArray`]
    pub fn fields(&self) -> &Fields {