These solutions assume that all the secondary hashes contain at least one key.
It's me again sir,

Sorry to disturb you.
how can I modify your snippet if there happen to be a 'primary' key that has no value, for example there is additional: 
'set5' =>{},

[download]
Just like in my recent posting.
I can always turn off warning, but it is still troubling. Hope to hear from you again.


---
neversaint and everlastingly indebted.......

In reply to Re^2: Sorting HoHoA based on Length of Second Key by neversaint
in thread Sorting HoHoA based on Length of Second Key by Anonymous Monk

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