pub fn format_grid<T: Iterator<Item = char>>(mut piece_iter: T, f: &mut Formatter) -> fmt::Result {
    write!(f, "   A B C D E F G H")?;

    for row in 0..EDGE_LENGTH {
        write!(f, "\n {} ", row + 1)?;
        for _ in 0..EDGE_LENGTH {
            write!(f, "{} ", piece_iter.next().ok_or(fmt::Error)?)?;
        }
    }

    match piece_iter.next() {
        None => Ok(()),
        _ => Err(fmt::Error),
    }
}
/// Format 64 characters into a pretty grid format.
/// `piece_iter` must yield exactly 64 items.
Format 64 characters into a pretty grid format.
`piece_iter` must yield exactly 64 items.
Format 64 characters into a pretty grid format . ` piece_iter ` must yield exactly 64 items .
pub fn format_grid<T: Iterator<Item = char>>(mut piece_iter: T, f: &mut Formatter) -> fmt::Result {
    write!(f, "   A B C D E F G H")?;
    for row in 0..EDGE_LENGTH {
        write!(f, "\n {} ", row + 1)?;
        for _ in 0..EDGE_LENGTH {
            write!(f, "{} ", piece_iter.next().ok_or(fmt::Error)?)?;
        }
    }
    match piece_iter.next() {
        None => Ok(()),
        _ => Err(fmt::Error),
    }
}
pub fn format_grid < T : Iterator < Item = char > > ( mut piece_iter : T , f : & mut Formatter ) -> fmt :: Result { write ! ( f " " ) ? ; for row in 0 .. EDGE_LENGTH { write ! ( f " \n " row 1 ) ? ; for _ in 0 .. EDGE_LENGTH { write ! ( f " " piece_iter next ( ) ok_or ( fmt Error ) ) ? ; } } match piece_iter . next ( ) { None => Ok ( ( ) ) , _ => Err ( fmt :: Error ) , } }
Format 64 characters into a pretty grid format.
Format 64 characters into a pretty grid format .
piece_iter
T
f
&mut Formatter
piece_iter
T
f
&mut Formatter