That's your problem: my makes a variable lexical, and symbolic references only work with dynamic/global variables. BTW, this is also why mixing eval STRING with lexicals is problematic: 
foobar:perl/blead% perl -le '$y="print \$x"; $z=sub { my $x=23; $y}; e
+val $z->()'

foobar:perl/blead% perl -le '$y="print \$x"; $z=sub { $x=23; $y}; eval
+ $z->()'
23

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In reply to Re^8: RFC: Tutorial: use strict; now what!? by educated_foo
in thread RFC: Tutorial: use strict; now what!? by Xiong

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