TreeQ

TreeQ[tree]

yields True if tree is a valid Tree object and False otherwise.

Examples

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Test whether an expression is a tree:

Check whether this is a valid Tree object:

This is an invalid Tree object:

This is a valid Tree object containing a child whose data is an expression with head Tree:

Test whether an expression is a valid tree object:

It is not a valid tree graph expression:

Construct the corresponding Graph object:

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