gistfile1.txt

    pub trait Show {
        #[scheme(
          TupleLike(try!(fmt.write_str(concat!($_name, "("))); try!($_); fmt.write(b")")),
          AnonymousList(try!($_);try!(fmt.write_str(","))),
          NamedList(try!(fmt.write_str(concat!($_name,":")));try!($_);try!(fmt.write_str(","))),
          StructLike(try!(fmt.write_str(concat!($_name, "{"))); try!($_); fmt.write(b"}")),
          UnitLike(fmt.write_str($_name))
          )]
        fn fmt(&self, fmt: &mut Formatter) -> Result;
    }