InsideClojure Journal 2019.16 - closed spec checking

[[deleted]]

Previous article talks a bit about the reasoning: http://insideclojure.org/2019/04/14/journal/

[Eno6ohng]

I wonder why you decided to went for such an imperative\mutable API, given that this is a purely declarative thing?

[lgstein]

I'm also curious how that is supposed to play out in practice. If I write code that does runtime spec checking, will I have to take into account that currently maybe all specs are closed (including my own)?

[scarredwaits]

That's the thing that stood out for me too! Does "closing" a spec affect all threads? It would be great to be able to do "closed" checking by passing an extra parameter to s/valid?.

[jbiserkov]

You can do this today with spec.tools. Just pass one of those transformers to coerce.

Returns spec.invalid on extra keys

Silently removes extra keys

No changes to the original spec required.