pub fn parse_record_fields(
text: &str,
columns: usize,
field: impl FnMut(usize, Option<String>) -> Result<()>,
) -> Result<()>Expand description
Split text into columns fields as record_in does, handing each field to field as soon as it is read: None is a NULL field. Leading and trailing whitespace around the parentheses is allowed; whitespace inside an unquoted field belongs to the field.