On Wednesday, 12 October 2016 at 06:20:05 UTC, mikey wrote:
On Sunday, 9 October 2016 at 14:06:42 UTC, Antonio Corbi wrote:
1. Inheritance with contracts is evaluated in a special way,
'in contracts' in the base and derived method (property) are
or-ed, so if one of them passses, the contract is believed to
have succeeded. As you don't have a contract in the
base-method: "@property void width(int width)", I think that
the compiler assumes that its empty contract is always true.
Doesn't sound right to me. "Or"ing contracts with different
inherited methods can't possibly be a feature. I'll create a
bug report for it.
Hi Mikey,
It's the way DbC (Design by Contract) works, have a look at point
8 in
https://www.eiffel.com/values/design-by-contract/introduction/
Antonio
