On Jul 25, 1:18 pm, siyu798 <siyu...@gmail.com> wrote:
> Tassilo,
> The reason a generic default macro being used here is because we can use
> the same macro to parse other data type like integer:
>
> (with-default 1 (Integer. my-value))
>
> Thanks,
> siyu
You can still do the same with a function:
(defn with-default [f & [default]]
(fn [& args]
(try (apply f args)
(catch Throwable _ default))))
(map (with-default #(Integer/parseInt %) 0)
["4" "test"])
;=> (4 0)
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