Question

When defining a struct type and instance, I can print the value and get the “struct” implementation type:

(defstruct person :name :age)
(def p (struct person "peter" 30))

user=> p
{:name "peter", :age 30}
user=> (type p)
clojure.lang.PersistentStructMap

But is it possible to tell whether p is an instance of the struct type “person”?

Answer 1

See: this post in the Clojure Google Group.
In general the group archives are a treasure chest…

Note: The functionality of structs is replaced by records. Then this is not a problem anymore, because records really define new type and you can check with instance? whether something is of record of a certain type.