This reminds me of how Applescript does it. When a sub is called in void context, the variable result gets assigned the return value. Sort of like this (pseudo): 
thatroutine() and return @result;

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Sounds like a Perl 6 feature request...

In reply to Re^2: looking for a good idiom: return this if this is true by anjoschu
in thread looking for a good idiom: return this if this is true by merlyn

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