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*ignore?* (clj)
(source)variable
Dynamic var. If bound to a logically true value in closing thread,
will ignore any closeable items. You may change its value is some
nested maps with meta `{::ignore false}`.
Because `clojure.walk/walk` is used for map traversal, it is not
possible to pass down any argument. Also, as we iteratively walk
through nested data structures, some of them do not support
metadata. As a result, a binding on this dynamic var in the
execution thread enables a simple way to remember the parent value
as we visit the children.