my %hash = map {($_=>1)} qw(shave the modern way);
Hurrah for this solution! One minor note: Since map evaluates the 'mapping block' in list context (as opposed to grep, incidentally), you can shave off two characters by omitting the parentheses.

UPDATE: Thanks to betterworld for pointing out that, if map didn't already evaluate its mapping block in list context, then the parentheses wouldn't help.

In reply to Re^4: Effeciency of key-only hash by JadeNB
in thread Effecicncy of key-only hash by brycen

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