Use Cascades Operator

If we want to perform a sequence of operations on the same object then we should use the Cascades(..) operator.

Do

var path = Path()
	..lineTo(0, size.height)
	..lineTo(size.width, size.height)
	..lineTo(size.width, 0)
	..close(); 

Don't

var path = Path();
	path.lineTo(0, size.height);
	path.lineTo(size.width, size.height);
	path.lineTo(size.width, 0);
	path.close();