lazy-seq marks it's supplied lambdata with ^{:once true} to prevent the
memory leak described at the bottom of this page <http://clojure.org/lazy>.
However, while going over the code for clojure.lang.LazySeq, I noticed that
ever since this commit by
Rich<https://github.com/clojure/clojure/commit/9253928ba2330b9929eb26577ba20047fb24c5de#diff-829faa850c65e040e132cd9243bf7ac2R42>,
LazySeq doesn't extend AFn, but rather contains a reference to the lambda,
fn, which it nullifies immediately after the first use, supposedly
preventing any leaks caused by closed locals.
So my question is, is ^{:once true} still necessary for lazy-seqs, or does
this (pretty old) change to LazySeq make it redundant?
Ron
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