Method set

src/matrix.rs:645–657

Replaces the element at row `row` (indexing starts at zero) and column `col` with the new value `newval`. Returns true on success and false on failure, i.e. if the row or column does not exist. ``` # #[macro_use] extern crate rustml; use rustml::*; # fn main() { let mut m = mat![ 1.0, 1.5; 2.0, 2.5; 5.0, 5.5 ]; assert_eq!(m.get(1, 0).unwrap(), &2.0); m.set(1, 0, 8.0); assert_eq!(m.get(1, 0).unwr

(&mut self, row: usize, col: usize, newval: T)

    /// # }
    /// ```
    pub fn set(&mut self, row: usize, col: usize, newval: T) -> bool {

        match self.idx(row, col) {
            None => false,
            Some(p) => match self.data.get_mut(p) {
                Some(val) => {
                    *val = newval;
                    true
                }
                None => false,
            }
        }
    }

    pub fn map<F, U>(&self, f: F) -> Matrix<U>
        where F: FnMut(&T) -> U {