What's a good way to find whether a hash is a subset of another hash (deep)?

[dblock]

Anyone has a good way to implement is_subset_of for a hash? It needs
to work for deep hashes obviously.

I basically have json data returned in two formats: short and full. I
want to make sure that the short format is an exact subset of the full
format. When they aren't an exact subset I want the fields that exist
in the first hash and don't exist in the second.

Thanks,
-dB.

 

[Robert Klemme]

Anyone has a good way to implement is_subset_of for a hash? It needs
to work for deep hashes obviously.

Why is that obvious? At least for me it isn't.

I basically have json data returned in two formats: short and full. I
want to make sure that the short format is an exact subset of the full
format. When they aren't an exact subset I want the fields that exist
in the first hash and don't exist in the second.

What does "short" and "full" exactly mean?

Kind regards

robert

 

[Simon Krahnke]

Why is that obvious? At least for me it isn't.

Maybe that will become clear, once we learn what a deep hash is. Is that
one that Hashes as values? Or, beware, Hashes as keys? Or, something
completely different?

What does "short" and "full" exactly mean?

It means that the short format is an exact subset of the full format.

What is an exact subset? In what way in a Hash a set?

mfg, simon .... l