On Tue, Oct 25, 2011 at 11:20, Michael Jaaka
<michael.ja...@googlemail.com> wrote:
> Hi!
> Pattern matching is fine for sequence or vector destruction.
> Is is possible to destruct map and make pattern machting?
> For example I would like to make constraint for to some query service.
> It would be done as map for example: { :name "Tom" :surname "Jakarta"
> :birthDate (Date.) } or { :personalId "12312312132" }
> Then I would like to dispatch this Value Object:
> (defn service
> ([ {:keys [name surname]} ] (println "searching by personal data"))
> ([{:keys [personalId]} ] (println "searching by id")))
>
> Why using map instead of specific type of VO?
> Because I don't want to decleare types of VO which doesn't bring any value
> to domain problem.
> Maybe matchure or other lib already implements it?
Clojure provides only destructuring, not pattern matching. (It's my
impression that Rich is not a fan of mixing destructuring with control
flow implied by pattern matching.)
If you want pattern matching, matchure seems like just what you need.
For your particular example, take a look at matchure's defn-match.
https://github.com/dcolthorp/matchure
// Ben
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