fn rows_to_file(&self) -> String {
        self.rows
            .iter()
            .map(|row| &row.source)
            .fold(String::new(), |mut s, nxt| {
                s.push_str(nxt);
                s.push('\n');
                s
            })
    }
/// Return a single String with the current text of all rows
Return a single String with the current text of all rows
Return a single String with the current text of all rows
fn rows_to_file(&self) -> String {
        self.rows
            .iter()
            .map(|row| &row.source)
            .fold(String::new(), |mut s, nxt| {
                s.push_str(nxt);
                s.push('\n');
                s
            })
    }
fn rows_to_file ( & self ) -> String { self . rows . iter ( ) . map ( | row | & row . source ) . fold ( String :: new ( ) , | mut s , nxt | { s . push_str ( nxt ) ; s . push ( '\n' ) ; s } ) }
Return a single String with the current text of all rows
Return a single String with the current text of all rows
&self