You are altering the root binding, rather than the current (possibly
dynamic) binding of the variable. The two may be distinct, since the
current bindings may be thread local, such as by `clojure.core/binding`
(see https://clojure.org/reference/vars).
Note that you can `alter-var-root` of non-dyna
`*out*` may have a thread binding established. REPLs will often do this.
If `*out*` is thread bound you should be able to use `thread-bound?` to
check that and then `set!` to set it, but you have to be careful because
https://clojure.atlassian.net/browse/CLJ-1077
On Wed, Sep 1, 2021 at 4:58 AM Ph
I can change my dynamic var with alter-var-root like this.
(def ^:dynamic *x* "abc")
(alter-var-root #'*x* (constantly "xyz"))
*x*
; => "xyz"
However, I cannot change *out* with alter-var-root.
(alter-var-root #'*out* (constantly "xyz"))
*out*
; => #object[java.io.PrintWriter 0x6957ec80 "java.i
