pub fn count(&self) -> u64 {
        // Assumes that all tables have the same number of rows, so
        // pick the first one
        self.columns.get(0).map(|c| c.count()).unwrap_or(0)
    }
/// Returns the total number of rows in the columns of this summary
Returns the total number of rows in the columns of this summary
Returns the total number of rows in the columns of this summary
pub fn count(&self) -> u64 {
        // Assumes that all tables have the same number of rows, so
        // pick the first one
        self.columns.get(0).map(|c| c.count()).unwrap_or(0)
    }
pub fn count ( & self ) -> u64 { // Assumes that all tables have the same number of rows, so // pick the first one self . columns . get ( 0 ) . map ( | c | c . count ( ) ) . unwrap_or ( 0 ) }
Returns the total number of rows in the columns of this summary
Returns the total number of rows in the columns of this summary
&self
&self