On Wed, 17 Apr 2013 11:47:49 -0700, Jim Gibson wrote: > 1. You should not modify a hash while you are iterating through it with > the each() function. The each() function uses an internal data structure > that persists from one call of each to the next. That internal data > structure can be modified if you add or delete elements (as you are > doing).
So the documentation has warned. Yet it should probably be updated, since that behavior has been demonstrated to be safe: https://groups.google.com/ forum/?hl=en&fromgroups#!topic/comp.lang.perl.misc/53Lfj8IM0JQ and there is specific code in the internals to make it safe: https:// groups.google.com/forum/?hl=en&fromgroups=#!topic/comp.lang.perl.moderated/ _J9aO8pdAVc -- Peter Scott http://www.perlmedic.com/ http://www.perldebugged.com/ http://www.informit.com/store/product.aspx?isbn=0137001274 http://www.oreillyschool.com/certificates/perl-programming.php -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
