Oops, I should never type code straight into an email window, without
REPLing it first... X_X
I left in the "links" argument to map. This is probably closer to what I
meant:
(defn listen-to
[links]
(doseq [link links]
(.log js/console link)))
On Wednesday, January 23, 2013 8:39:51 PM UTC-8, Evan Mezeske wrote:
>
> When you want to iterate over things and perform a side-effecty action for
> each one (logging is a side effect, as would be adding event listeners to
> DOM nodes, changing CSS classes, etc), doseq is usually the clearest thing
> to do:
>
> (defn listen-to
> [links]
> (doseq [link links]
> (.log js/console link) links))
>
> You almost never want to use map for side effects. A good rule of thumb
> is that if you don't use the return value from map, you probably want doseq
> instead.
>
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