On Wed, Sep 3, 2014 at 3:58 AM, Alexandre Lucchesi <alexandrelucchesi@gmail.com> wrote:

In order to add such constraints you should define "constructor functions" and apply the validation there, i.e.:

To OP: Yes, the searchable term is "smart constructors". However, it has been used at least once on this list to mean something different, so look out.