eval "tr/$alpha//cd";

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That can be evil if $alpha contains a slash or is untrusted. To do that tr right requires some really careful thinking.

That's why I conveniently ignored all but the basic specification. {grin}

-- Randal L. Schwartz, Perl hacker

In reply to Re: Re: Re: Find duplicate chars in a string by merlyn
in thread Find duplicate chars in a string by monkfish

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