Thats clear to me, but I do not understand the other part: The question is how to return a value, if it is true and continue otherwise. 
sub that { 5 }
sub xx{ eval { return that() || die }; 1 }
print xx;
__OUTPUT__
1

[download]
But the op wants 5 and that the part outside the eval is not executed expect when that is false.
Boris

In reply to Re^3: looking for a good idiom: return this if this is true by borisz
in thread looking for a good idiom: return this if this is true by merlyn

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