return new_A( s + o );
`}
+ fun +: A import value, A `{
+ int s = A_value(recv);
+ return new_A(+s);
+ `}
+
fun -( other : A ) : A import value, A `{
int s = A_value( recv );
int o = A_value( other );
a[ 74 ] = new A( 96 )
print a # 96
+print(+(new A(123)))
print(-(new A(123)))