I have a (s/def ::items (s/coll-of ::item :min-count 1)). How do I create a new spec from it that has some extra constraints, e.g. (s/def ::items-2 (s/coll-of ::item :min-count 1 :gen-max 6)) without repeating the common ones?

👋:skin-tone-2:

is there a way to spec maps but without defining entities for the keys?

map? is a valid spec :)

I mean a spec for a combination of specific keys with specific values

what kind of keys / what kind of values ?

you can s/and any custom predicate you might have

say I want a spec for a map of {:key1 "a string" :key2 :a-keyword} without s/def :key1 and s/def :key2

I can write arbitrary functions for these but it would be nice if there were a way to go just {:key1 string? :key2 keyword?}

user=> (s/def ::m (s/keys :req-un [:foo/key1 :foo/key2]))
:user/m
user=> (s/valid? ::m {:key1 "a string" :key2 :a-keyword})
true

that doesn't validate the values, though?

but no, you can't get the value check without also def'ing the key specs

gotcha

ok

for reference, with malli you can do:

[:map
   [:id string?]
   [:tags [:set keyword?]]
   [:address
    [:map
     [:street string?]
     [:city string?]
     [:zip int?]
     [:lonlat [:tuple double? double?]]]]]

I'm on a project using spec, though, and was hoping for something similar. sounds like I need to define the key specs

thanks, Alex