--- Eric Beaudoin <[EMAIL PROTECTED]> wrote: > I was wondering if someone could explain why a variable define with a global scope >was slower > that one define within the local lexical scope when used in a loop?
If I recall correctly, you should usually get better performance from lexically scoped variables than from global ones. Lexically scoped variables are stored in a private "scratchpad" array and can be accessed directly by Perl. Globals, on the other hand, are stored in a public symbol table in a typeglob. Perl has to do a hash lookup in the symbol table and then get the corresponding entry in the typeglob for the variable you need. No such lookup in necessary for lexicals, hence the better performance. Any internals people around? I'd love to hear some more knowledgeable people /(?:correct|expand upon)/ this. Cheers, Curtis "Ovid" Poe ===== "Ovid" on http://www.perlmonks.org/ Someone asked me how to count to 10 in Perl: push@A,$_ for reverse q.e...q.n.;for(@A){$_=unpack(q|c|,$_);@a=split//; shift@a;shift@a if $a[$[]eq$[;$_=join q||,@a};print $_,$/for reverse @A __________________________________________________ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
