Also, the ordering of hash keys has always been, and continues to be, affected by the insertion order. Perl has never guaranteed any ordering of the hash keys, and the ordering has already changed several times during the lifetime of Perl 5. Now, however, the order varies between different runs of Perl. Previously while the order of hash elements from keys(), values(), and each() was essentially random, it was still repeatable. Mainly due to security reasons, the "random ordering" of hashes has been made even more random. New Maintenance Developmentĥ.8.1 2003-Sep-25 # Incompatible Changes # Hash Randomisation Confused? This timeline hopefully helps a bit: it lists the new major releases, their maintenance releases, and the development releases. In case you are wondering about 5.6.1, it was bug-fix-wise rather identical to the development release 5.7.1. If you are upgrading from an earlier release such as 5.6.1, first read the perl58delta, which describes differences between 5.6.0 and 5.8.0. This document describes differences between the 5.8.0 release and the 5.8.1 release. Perl581delta - what is new for perl v5.8.1 # DESCRIPTION Tru64: No threaded builds with GNU cc (gcc).HP-UX: HP cc warnings about sendfile and sendpath.Net::Ping 450_service and 510_ping_udp failures.New "Tied variable freed while still in use".New "Possible precedence problem on bitwise %c operator".New "Newline in left-justified string for %s".Changed "Invalid range "%s" in transliteration operator".New "Illegal declaration of anonymous subroutine".Removed "Attempt to clear a restricted hash".Changed "A thread exited while %d threads were running".Installation and Configuration Improvements.(Reminder) The $* variable is deprecated (really).(Reminder) 5.005-style threads are deprecated (really).(Reminder) Pseudo-hashes are deprecated (really).Tied Arrays with Negative Array Indices.UTF-8 no longer default under UTF-8 locales.
(Win32) The -C Switch Has Been Repurposed.Single-number v-strings are no longer v-strings before "=>".UTF-8 On Filehandles No Longer Activated By Locale.
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