3 ms·
No one really wants [x, y). That want [0,y) or [x,x+y) because y is the length of the interval. So no one wants (y,x] when going backwards, because x<>0 there.
by lupire 4y ago
No one really wants [x, y). That want [0,y) or [x,x+y) because y is the length of the interval.
So no one wants (y,x] when going backwards, because x<>0 there.