> On Dec 6, 2015, at 12:49 PM, David Hart via swift-users
> <swift-users@swift.org> wrote:
>
> When writing library code, what method of parameter validation would be
> suggested?
Definitely assert. Assert is for illegal calls, i.e. programmer errors, while
errors (throw) are for valid runtime error conditions.
> Cons
> * Disabled in release
I believe there is a compiler flag to control this, if you want them enabled in
the release.
> * Not unit-testable
Well, you can’t create tests for rejection of illegal parameters. Which doesn’t
seem like a huge loss to me. It would be nice to be able to do this, though.
Maybe through some mechanism for catching / recovering from the otherwise-fatal
exception triggered by an assert failure?
—Jens
_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users
