cljs.spec.alpha/?
| macro | previously cljs.spec/? |  clojure.spec.alpha/? | Edit |
(? pred-form)Source docstring:
Returns a regex op that matches zero or one value matching pred. Produces a single value (not a collection) if matched.
Source code @ clojurescript:src/main/cljs/cljs/spec/alpha.cljc
(defmacro ?
[pred-form]
`(maybe-impl ~pred-form '~(res &env pred-form)))