In C, it's easy to write a switch/case statement that falls through, to implement Duff's Device or other cases where to handle the last partial frame of data you want to jump into a sequence of instructions as some point. That is, if my n is 8, do 8 statements; if n is 7, skip the first; if n is 6, skip the first two, etc.

How would you efficiently do that in Perl 5.8? The obvious way evaluates all the conditions even though we know that once one is true the rest will be true also.

—John

In reply to falling through cases? by John M. Dlugosz

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