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All the Perl that's Practical to Extract and Report

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  • I recall that in "thinking in forth" there was a whole chapter about this :) Anyway I'd say: predicate dispatch, which encompasses both pattern matching, overloading/mmd, and eliminates the need for if statements and switch/case. The nice thing about predicate dispatch is that even your basic control structures remains open for change, it's the same shift from a huge switch/case and OO design. Already in perl6 afaict :).