in reply to Why Closures?
As a simple example of a useful application of closures (and some
interesting discussion) see my
Setting up signal handlers for an object with access to $self
snippet. In this case, you can use closures to store the current
value of a variable ($self in this case) to provide later access
to its current value without having to explicitly store it
anywhere.
--ZZamboni
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In Section
Meditations