This is not modifying the value it's creating a new scope with a new
version of x. The binding above is shorthand for:

(let [x 3]
  (let [x 42]
    (println x))
  (println x))

;; prints:

42
3


Timothy


On Fri, Apr 4, 2014 at 10:23 AM, Plínio Balduino <pbaldu...@gmail.com>wrote:

> Hi there
>
> I wrote this code expecting an error, but it worked:
>
> (let [x 3
>       x (* valor 2)]
>   x)
> ; 6
>
> Is It the expected behavior or, considering that a local binding could not
> be modified, it should really raise an error?
>
> Thank you
>
> Plínio
>
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