On Tuesday, July 8, 2014 9:40:54 AM UTC-4, Cecil Westerhof wrote:
>
> In Clojure you can define a local constant with let, but I need a variable
> (I think).
>
> I want to do the following. I have a function that checks several things.
> Every time an error is found I want to set the variable errors to:
> (concat errors new-error)
>
> Is this possible? Or is there a better way to do this?
>
>
You *could* do something like:
~~~
(let [errors (atom [])
...
(swap! errors conj "error-X")
...)
~~~
though, a more functional approach might look more like:
~~~
(loop [errors []
things-to-check ...]
(if (empty? things-to-check)
errors
(recur (conj errors (check (first things-to-check)))
(rest things-to-check))))
~~~
-- John
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