On Tue, Jul 14, 2009 at 12:40 PM, Jarkko Oranen<[email protected]> wrote:
> This is a common gotcha. It's actually a laziness issue: the seq
> produced by filter is realised only after it exits the binding scope,
> thus producing '(1). You need to use "doall" to force the seq if you
> want the binding to apply.

Yeah, but more and more I'm finding that with complex code, it can be
rather difficult to identify the parts that are lazy and the parts
that aren't.  Which makes using binding rather risky.  I've started to
refactor most of my code to avoid dynamic binding, because I'm tired
of getting burned by this gotcha.  Which is a shame.

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