On Jun 16, 2010, at 7:07 PM, ataggart wrote:
> There's a disconnect between the function definition and the
> datastructures used by the caller.
>
> Either fix the data structure:
> (def args [:bar 2 :baz [:quux]])
> then use apply
>
> Or change the function definition to take a map:
> (defn foo [x {:keys [bar baz]}]
> ...)
That's a pretty flippant answer. I have run into this same issue; it's not
always desirable to have your function take a map, and if you get the data
structure from elsewhere (say loaded from a config file), then you have to
resort to either re-building the arg list manually or doing (apply concat ...).
Regarding Brian's original question: as far as I know, there is no built-in
version of apply that works with keyword args contained in a map. But note that
you can eliminate the call to seq, since (apply concat args) works the same as
(apply concat (seq args)).
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