Hi folks,
I've been experimenting with the new type system in Clojure 1.2, but
I've hit something of a problem. If I define a record:
user=> (defrecord Foo [])
user.Foo
Then I can coerce a map into a type Foo like so:
user=> (def m {:x 1, :y 2})
#'/user/m
user=> (Foo. {} m)
#:user.Foo{:x 1, :y 2}
But what if I define an argument in the record constructor?
user=> (defrecord Bar [x])
user.Bar
I can't use (Bar. {} m); I'd have to use (Bar. (m :x) {} (dissoc
m :x)), but this depends on me knowing in advance that x is an
argument in Bar's constructor.
So is there a programmatic way of telling what keys a record derives
from its constructor? Or if there is any other way of coercing a map
into an arbitrary record?
- James
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