public void Vector3dApplyWorks()
{
var v = new Vector3d(1.11, 2.22, 3.33);
v.Apply(Math.Round);
Assert.True(v.Equivalent(new Vector3d(1, 2, 3)));
v.Apply(val => { return(val + 1); });
Assert.True(v.Equivalent(new Vector3d(2, 3, 4)));
}