I have to admit, I hate the idea of the trailing ::.
If you're enumerating the ways to quote things in Perl, don't forget HERE docs:
<<HERE # Double quoted
<<"HERE" # Double quoted, explicit.
<<'HERE' # Single quoted, explicit.
<<\HERE # Single quoted, uncommonly used.
<<`HERE` # Same as qx or ``.
<<~HERE # Double quoted, indented.
<<~"HERE" # Double quoted, indented.
<<~'HERE' # Single quoted, indented.
<<~\HERE # Single quoted, indented, uncommonly used (I'll b
+et you could grep all of CPAN and not find this).
<<~`HERE` # Same as qx / ``, indented.
Which made me think, too bad we don't have:
<<~/HERE/x # Regexp object, indented, multi-line freeform (/
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