null-iterator-for-leaf-glyphs

Status: IN

NullIterator is a degenerate iterator for leaf glyphs whose IsDone() always returns true, eliminating null checks throughout traversal code — an instance of the Null Object pattern.

Source: entries/2026/06/17/gof-oo-chunk-6.md

Depended on by

• null-iterator-propagates-transparency-cost-across-pattern-boundaries

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