Spec usage guide questions:
There is a small typo in the 'Collections' section (pretend this is a
question):
(s/conform (s/coll-of number? #{} #{5 10 2}))
;; should be
(s/conform (s/coll-of number? #{}) #{5 10 2})
Is there a technical reason why the paths reported by 's/explain' for regex
ops are incomplete? E.g., in the "A game of cards" section, I would expect:
(s/explain ::game ...)
At: [::players 0 ::hand 0 1] val: :banana fails spec: ::card predicate: suit?
;; but the real output is this, indices from regex matches missing
At: [::players ::hand 1] val: :banana fails spec: ::card predicate: suit?
It's fine here, but it could get harder to find the failure point in a
larger data structure.
Is there a way to write a map spec that contains *only* the required
keyset? This is against the spirit of the 'composition' arguments in the
Rationale, but sometimes I really want to pin down the exact data in a map,
especially for data about to escape into the wild (e.g. return values of a
web API).
The behavior of 's/and' really surprised me (again, pretend this is a
question). The conformed values propagating through is semantically weird
when you have 'core/and' in mind. Also, if you have data keywords and spec
keywords, it could get complicated to keep track of what's what in the
later specs. More examples in the "Composing predicates" section, right
when 's/and' in introduced, might take away the surprise and replace it
with luxurious comfort.
Is there a recommended way to introspect specs for our own purposes
(coercion, code generation)? An interpreter on the output of 'describe'
might work (although it's a little complicated for fn specs), but I wanted
to know if you all had any thoughts or plans for the future here.
Thanks,
Leif
On Tuesday, May 24, 2016 at 1:04:45 PM UTC-4, Alex Miller wrote:
>
> Clojure 1.9.0-alpha1 is now available.
>
> Try it via
> - Download:
> https://repo1.maven.org/maven2/org/clojure/clojure/1.9.0-alpha1
> - Leiningen: [org.clojure/clojure "1.8.0-alpha2"]
>
> 1.9.0-alpha1 includes the first release of clojure.spec
> <http://clojure.org/about/spec>.
>
> A usage guide for spec is now available: http://clojure.org/guides/spec.
>
> Enjoy!
> Alex
>
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