In Perl 5.010, I'd like to write: 
my $suffix = given ($type) {
  when ("csv") { "txt" }
  when ("xml") { "xml" }
};

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I know I can effectively accomplish the same thing with a do statement and introducing a dummy lexical: 
my $suffix = do { my $result; given ($type)
  when ("csv") { $result = "txt" }
  when ("xml") { $result = "xml" }
  ... 
} $result };

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Is there another way to use given...when... in a "functional" way which avoids introducing a do statement and a dummy lexical?

In reply to functional "given...when..."? by perl5ever

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