fn parse_rectangle<'a, I>(v: &mut I) -> Option<Rectangle>
where
    I: Iterator<Item = &'a str>,
{
    if let (Some(x), Some(y), Some(w), Some(h)) =
        (v.next(), v.next(), v.next(), v.next())
    {
        if let (Ok(x), Ok(y), Ok(w), Ok(h)) =
            (x.parse(), y.parse(), w.parse(), h.parse())
        {
            if x > 0 && y > 0 {
                return Some(Rectangle::new(x, y, w, h));
            }
        }
    }
    None
}
/// Parse a rectangle from a tag.
///
/// * `v` Iterator of rectangle parameters.
Parse a rectangle from a tag.
`v` Iterator of rectangle parameters.
Parse a rectangle from a tag . ` v ` Iterator of rectangle parameters .
fn parse_rectangle<'a, I>(v: &mut I) -> Option<Rectangle>
where
    I: Iterator<Item = &'a str>,
{
    if let (Some(x), Some(y), Some(w), Some(h)) =
        (v.next(), v.next(), v.next(), v.next())
    {
        if let (Ok(x), Ok(y), Ok(w), Ok(h)) =
            (x.parse(), y.parse(), w.parse(), h.parse())
        {
            if x > 0 && y > 0 {
                return Some(Rectangle::new(x, y, w, h));
            }
        }
    }
    None
}
fn parse_rectangle < ' a , I > ( v : & mut I ) -> Option < Rectangle > where I : Iterator < Item = & ' a str > , { if let ( Some ( x ) , Some ( y ) , Some ( w ) , Some ( h ) ) = ( v . next ( ) , v . next ( ) , v . next ( ) , v . next ( ) ) { if let ( Ok ( x ) , Ok ( y ) , Ok ( w ) , Ok ( h ) ) = ( x . parse ( ) , y . parse ( ) , w . parse ( ) , h . parse ( ) ) { if x > 0 && y > 0 { return Some ( Rectangle :: new ( x , y , w , h ) ) ; } } } None }
Parse a rectangle from a tag.
Parse a rectangle from a tag .
v
&mut I