pub fn pad<F, I>(x: &I, padding: F, len: usize) -> Result<I, ()>where
F: Float + FloatConst + NumAssign + 'static,
for<'c> I: Iterable<OwnedItem = F, Item<'c> = &'c F>,Expand description
Clone and pad the real valued input collection with the floating
point type F to the length len