To comment my own question some years and a bit of experience later:
I would say that, just like with type-hinting: hold of as long as possible.
Only when you find yourself adding to a map something like: {:type Person}
is it time to consider using a Record in stead. And of course also if you
would like to dispatch on type (defprotocol / defmethod).
On Monday, September 5, 2011 at 3:46:37 PM UTC+2, Terje Dahl wrote:
>
> Ref: Stuart Halloway's talk: "Simplicity":
>
> http://blip.tv/clojure/stuart-halloway-simplicity-ain-t-easy-4842694
>
> Found via reading list: http://clojure.com/reading.html )
>
> At one point in his talk he states that defrecord is in fact basically
> "documented, named [typed] structure".
> (as opposed to a standard map).
> This I thought was quite genius.
>
> But on further reflection I wonder if:
>
> A: Doesn't this contradict another Clojure rationale:
> "It is better to have 100 functions operate on one data structure than
> to have 10 functions operate on 10 data structures." - Alan J.
> Perlis http://clojure.org/rationale
>
> B: Is this not a form of optimization - (which may be premature)?
>
> C: Is it best to use records only within an aplication, but to export
> to generic maps when "serializing" data to a string og stream for
> communication or storage ...
> Is this the best way to "serialize" a record?:
> (into {} intance-of-my-record)
> Would you "desiralize" it with a custom function like this?
> (fn [{key1 :key1, key2 :key2}] (MyRecord. key1 key2)) (calling it
> like this: (my-fn map-to-be-destructure-and-recordfied)
>
>
>
>
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