Method count_cells

perro_source/core/perro_structs/src/structs/matrix/mod.rs:668–672

(&self, mut f: impl FnMut(usize, usize, &T) -> bool)

    #[inline]
    pub fn count_cells(&self, mut f: impl FnMut(usize, usize, &T) -> bool) -> usize {
        self.cells()
            .filter(|(row, col, value)| f(*row, *col, value))
            .count()
    }

    #[inline]
    pub fn find_cell(&self, mut f: impl FnMut(usize, usize, &T) -> bool) -> Option<(usize, usize)> {