TreeMap

TreeMap[f,tree] applies f to the data of each subtree of tree.

TreeMap[f,tree,levelspec] applies f to the data of subtrees on levels of tree specified by levelspec.

TreeMap[f,tree,levelspec->elems] applies f to the elements elems of subtrees on levels specified by levelspec.

TreeMap[f] represents an operator form of TreeMap that can be applied to a tree.

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