#Need a solution to avoid circular imports
#File ForPoint.rakumod
unit Module ForPoint;
#We cannot import ForLine here : circular problem

#suppose we declare subbed Line here ok
#but it is implemented into ForLine module which we may NOT import with use.
#How can we proceed though?
class Line {
    ...
};

class Point is export {
    has Int $.x;
    has Int $.y;
    has Line @belong;#Here is the problem.

    method new(Int $x,Int $y) {
        # bla bla
    }
}


#File Forline.rakumod
unit Module ForLine;
use ForPoint;

class Line is export {
    has Point $.a;
    has Point $.b;

    method new(int-list $ia,int-list $ib,:$int-motif? = -1,:$motif? = ''){
        my Point ($a,$b,$origin,$destination) = bound_control($ia,$ib);
        self.bless( :$a, :$b,:$origin,:$destination,:$int-motif,:$motif);
    }
    method a {
        #bla bla
    }
    method b {
        #bla bla
    }
}