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You may not start an identifier with - like that; hyphens and apostrophes are only allowed internally.

In theory one can declare or use any name you like using Perl 6's explicit symbolic ref notation:

my $::("-O'Malley's") = 42; say $::("-O'Malley's");
However, neither implementation does constant folding well enough yet to recognize these as a static variable names.

In reply to Re^3: Perl6: S2 identifier and $ special var questions by TimToady
in thread Perl6: S2 identifier and $ special var questions by rir

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