Purity in Eiffel

[bearophile]

Max Klyga Wrote:

> Found a blog post about purity and contracts relations in Eiffel 
> language.

Thank you for the link to the interesting article. I hope future languages will use some of such large amount of thinking and design work. I hope some simple way to manage pre-state will be added to D contracts.
Was adding "pure" worth the effort in D?

Bye,
bearophile