It may be a bit of an overkill, but assuming you are trying to have: 
$text = 'my $foo has gone completely $bar';
%hash = (foo => 'dog',  bar => 'crazy');
$final_text = unknown_method($text);
#$final_text is now 'my dog has gone completely crazy'

[download]
I think Text::Template will do exactly what you want. If that's not what you want, please clarify.

In reply to Re: eval using hash values by swiftone
in thread eval using hash values by bernie_simon

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