What We’ve Learned (2)

• Indicate special usage with a distinct key

• Restrict iteration  $for key(select subkey)$ … $end$

• Test nested conditions $if key1.key2$ … $end$

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Review what we’ve learned (part 2).

We have seen how to identify a special usage of a key by inserting a new key that describes that usage into the dictionary.

We have seen how to restrict iteration to only those entries having the special key.

We have seen how to concatenate keys to reference values in nested structures.