rextendr Rust/R function to calculate the rowMins of a matrix (no NA processing)

rowmin.rs

library(rextendr)

rust_function("
fn rowmin(m: RMatrix::<i32>) -> Vec<i32> {

    // convert to an ndarray
    let matrix = <ArrayView2<i32>>::from_robj(&m).unwrap();

    // store results
    let mut min_values = Vec::with_capacity(matrix.len());

    // iterate through each row in the matrix and find min
    for row in matrix.rows() {

        // find the minimum value in the current row
        // and push it to the result vector
        min_values.push(*row.iter().min().unwrap());
    }

    min_values
}
", 
extendr_fn_options = list(use_try_from = TRUE), 
features = "ndarray", 
profile = "release"
)