> Is there a way to test an object if it's a certain kind of struct?

>  (defstruct person :name :age)
>  (def president (struct person "Sam" 30))
>  (struct? person president) ; true

> Thanks in advance.

> > Is there a way to test an object if it's a certain kind of struct?

> >  (defstruct person :name :age)
> >  (def president (struct person "Sam" 30))
> >  (struct? person president) ; true

> Hi,

> Defstruct doesn't define a new type in the OO sense. You can test for
> presence of keys, e.g.

> (every? #{:name :age} (keys president))

> will return true, because 'president' has both :name and :age keys.
> But other structures might also have these keys, so this is "duck
> typing" at best.

> Others have suggested using metadata to "tag" struct values with type
> information -- that might be an option you prefer over
> key-comparision.

> Best,
> Graham

> > Thanks in advance.