return $_ if $_ = thatroutine();?

I tried 

return $var if my $var = thatroutine();

[download]
and 
return my $var if $var = thatroutine();

[download]
but neither works.

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

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