Method extend_from_iter_option

arrow-array/src/builder/primitive_builder.rs:269–281

(&mut self, iter: I)

    /// Panics if `values` and `is_valid` have different lengths
    #[inline]
    pub fn extend_from_iter_option<I: IntoIterator<Item = Option<T::Native>>>(&mut self, iter: I) {
        let iter = iter.into_iter();
        self.values_builder.extend(iter.map(|v| match v {
            Some(v) => {
                self.null_buffer_builder.append_non_null();
                v
            }
            None => {
                self.null_buffer_builder.append_null();
                T::Native::default()
            }
        }));
    }

    /// Appends array values and null to this builder as is
    /// (this means that underlying null values are copied as is).