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GOTO in C, not in Perlby grinder (Bishop) |
on Jan 27, 2009 at 10:43 UTC ( [id://739145]=note: print w/replies, xml ) | Need Help?? |
There are valid performance reasons for using goto in C: it compiles down to a single instruction and is the nicest way to build a state machine. On the other hand, using goto in Perl is very slow: the interpreter has to walk up and down the optree to look for the label. Since Perl is so much slower anyway, you may as well use a dispatch table (of coderefs in a hash) instead, if it's a state machine you're after. Anyway, getting back to the OP, an infinite loop (while (1) {...}) with an explicit break (last) is preferable to a goto back to the beginning, or a do while. • another intruder with the mooring in the heart of the Perl
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