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-rw-r--r--users/grfn/bbbg/src/bbbg/meetup_user.clj8
1 files changed, 8 insertions, 0 deletions
diff --git a/users/grfn/bbbg/src/bbbg/meetup_user.clj b/users/grfn/bbbg/src/bbbg/meetup_user.clj
new file mode 100644
index 0000000000..bd183132b7
--- /dev/null
+++ b/users/grfn/bbbg/src/bbbg/meetup_user.clj
@@ -0,0 +1,8 @@
+(ns bbbg.meetup-user
+  (:require [clojure.spec.alpha :as s]))
+
+(s/def ::id
+  (s/nilable
+   (s/and string?
+          seq
+          #(re-matches #"\d+" %))))