[swift-dev] switches versus the visitor pattern?

John McCall rjmccall at apple.com
Fri Aug 11 18:21:09 CDT 2017

> On Aug 11, 2017, at 7:05 PM, David Zarzycki via swift-dev <swift-dev at swift.org> wrote:
> Hi Slava,
> Thanks. I’m not planning on seeking them out. I just want to minimize future merge conflicts with an experimental branch I’m working on. The visitor pattern helps people like me by minimizing the number of boilerplate updates a person needs to do after adding a new type to the type system.

Unless you're splitting an existing type, most of the boilerplate updates are intentional — we want people to think about every case when doing the update.


More information about the swift-dev mailing list