Monks, I thought \Q and \E in regexes means no interpolation happens, like the equivalent of '' for strings. But I guess I was wrong about that as the following snippet shows. Or is there indeed some way to get \Q and \E to literal-match the dollar, as it literal-matches parenthesis and most other special characters? Thanks! 
use strict;
use warnings;
use Test::More qw(no_plan);

like('a',qr/a/); #passes
like('(',qr/\Q(\E/); #passes -- \Q\E works for parenthesis and most sp
+ecial characters
like('asdf$',qr/\Qasdf$\E/); #no -- but not for the dollar sign
like('asdf$',qr/\Qasdf\$\E/); #no
like('asdf$',qr/asdf$/); #no
like('asdf$',qr/\$/); #passes -- you have to backslash the dollar

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UPDATE: Much obliged, monks. Cutting to the good part, it seems my question can best be answered with: use quotemeta, and compile the result with qr. 
use strict;
use warnings;
use Test::More qw(no_plan);

like('asdf$', quotemeta('asdf$')); #fails
my $re = quotemeta('asdf$'); 
like('asdf$', qr/$re/); #passes
like('asdf$', qr/@{[ quotemeta('asdf$') ]}/); #passes

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In reply to Can I use Q and E to regex match the dollar sign? by tphyahoo

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