Function append_part

datafusion/functions-nested/src/string.rs:321–331

(
    builder: &mut impl StringArrayBuilderType,
    value: &str,
    null_value: Option<&str>,
)

/// Appends `value` to the string builder, or NULL if it matches `null_value`.
#[inline(always)]
fn append_part(
    builder: &mut impl StringArrayBuilderType,
    value: &str,
    null_value: Option<&str>,
) {
    if null_value == Some(value) {
        builder.append_null();
    } else {
        builder.append_value(value);
    }
}

/// Optimized `string_to_array` implementation for the common case where
/// delimiter and null_value are scalar values.