Of the notable virtues of all good programmers, cleverness
You're refactoring a common routine out so that it's more generalized and useful. You want to standardize to avoid introducing cut-n-paste bugs on the next opportunity to make a similar tree structure. Thus, it's more important to be clear and obvious than to be compact.
If there's ever a specific reason to adopt a more compact and clever form of an algorithm, it should be to take advantage of some efficiency trick, turning a very slow O(n) into a very fast O(n). And explain what you're leveraging clearly. I see no particular efficiency worries here.
[ e d @ h a l l e y . c c ]
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