I think that, from a user perspective, the important difference from
mutation to shadowing is, that outer x is available even in the inner
context, if captured by a closure.
Likewise, a second thread, that runs an outer closure, would see the
original x.
Observe:
(let [x :outer
f (fn [] x)
x :inner]
(println (f)) ; => :outer
(println x)) ; => :inner
Shadowing can still be confusing to a smaller extent, so I like to call
shadowed versions x, x', x'', aso.
regards
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