I tried MERGE too and got the same error. I was using 5.16.2 on Windows. That's my work box. I'm home now on Linux, MERGE is also not helping me. am I using the option wrongly? 

r@Che ~ $ perl -MMemoize -MMemoize::Expire -E "sub f {int rand 100}; \
          tie my %cache => 'Memoize::Expire',LIFETIME=>2,LIST_CACHE=>'
+MERGE';\
          memoize 'f',SCALAR_CACHE => [HASH => \%cache ];\
          for (1..10) {say f(); sleep 1}"
45
45
45
45
45
45
45
45
45
45
r@Che ~ $ perl -v

This is perl 5, version 14, subversion 2 (v5.14.2) built for x86_64-li
+nux-gnu-thread-multi
(with 65 registered patches, see perl -V for more detail)

Copyright 1987-2011, Larry Wall

Perl may be copied only under the terms of either the Artistic License
+ or the
GNU General Public License, which may be found in the Perl 5 source ki
+t.

Complete documentation for Perl, including FAQ lists, should be found 
+on
this system using "man perl" or "perldoc perl".  If you have access to
+ the
Internet, point your browser at http://www.perl.org/, the Perl Home Pa
+ge.

[download]

Cheers,
R.

Pereant, qui ante nos nostra dixerunt!

In reply to Re^2: Memoize::Expire oddity by Random_Walk
in thread Memoize::Expire oddity by Random_Walk

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