How do I get the minimum or maximum value of an iterator containing floating point numbers?

Question

I understand why the floats don\'t have an implementation for Ord but that doesn\'t particularly help me when I want to be lazy and use iterators.

Is there a workaro

Answer 1

Perhaps like this?

fn main() {
    use std::cmp::Ordering;
    let mut x = [2.0, 1.0, -10.0, 5.0];
    x.sort_by(|a, b| a.partial_cmp(b).unwrap_or(Ordering::Equal));
    println!("min in x: {:?}", x);
}

One thing I struggled with is that sort_by mutates the vector in place so you can't use it in a chain directly.