The eval is necessary if you want to fully emulate the C semantic of not dieing if there is no matching case. Really, the full-on computed goto method (I should have just written this into my top-level response) is this (I think): 
{
eval { goto "CASE$var" } or goto DEFAULT;

    CASE10: print "a";
    CASE9:  print "b";
    CASE8:  print "c";
    CASE7:  print "d";
    CASE6:  print "e";
    CASE5:  print "f";
    CASE4:  print "g";
    CASE3:  print "h";
    CASE2:  print "i";
    CASE1:  print "j";
    DEFAULT: 
}

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Which, admittedly, is not very different from Aristotle's. The only real difference being the outter braces. The purpose of them is to avoid polluting the label name-space. (Also, I prefer the "goto X or goto DEFAULT" over the "goto X; goto DEFAULT" purely for aesthetic reasons. :-D)

I sort of wonder why this isn't given as one of the ways of achieving C-like switch statement behavior in the perl docs? Oh, well... it's probably horribly inefficient or something (apart from just being too C-ish or something). 

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:Wq
Not an editor command: Wq

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In reply to Re^4: fall through switch/case in perl by etcshadow
in thread fall through switch/case in perl by ykar

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