Unless you go to extraordinary length to close them, most implementations, including the defacto blessed-reference based and inside-out implementations of classes allow you to add or replace methods at runtime.

For my interest, what is it that you find so desirable about open classes?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re: How could we "implement" Open Classes in Perl ? by BrowserUk
in thread How could we "implement" Open Classes in Perl ? by Alien

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