A custum constructor (aka factory function) is even considered idiomatic
https://github.com/swannodette/lt-cljs-tutorial/blob/master/lt-cljs-tutorial.cljs#L1289
<https://github.com/swannodette/lt-cljs-tutorial/blob/master/lt-cljs-tutorial.cljs#L1289>
HIH
mimmo
> On 27 Dec 2015, at 17:22, juh...@gmail.com wrote:
>
> I'm wondering about the record usage where a record would have relations
> between its fields. This would be best explained with the following example:
>
> user=> (defrecord Time [minutes seconds])
>
> user.Time
>
> user=> (->Time 0 59)
>
> #user.Time{:minutes 0, :seconds 59}
>
> user=> (update (->Time 0 59) :seconds inc)
>
> #user.Time{:minutes 0, :seconds 60}
>
>
> It's not very nice since 60 seconds is not really a valid value. If it would
> be possible to define so that
>
>
>
>
> user=> (Time. 0 60)
> #user.Time{:minutes 1, :seconds 0}
>
>
>
> then if I'm reading emit-defrecord correctly, assoc and therefore update etc.
> would work as expected here. Would this be semantically against principles of
> record or could some kind of structure to modify the fields while creating a
> new instance of a record be considered as part of Clojure?
>
>
>
>
>
> Juho
>
>
>
>
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