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AI-generatedIndex‑based vs key‑based data joins: choosing the right binding strategy in D3
Goal Determine the appropriate data binding approach for a dynamic bar chart that may be reordered, filtered, or animated over time. Constraints and Uncertainty Using selection.data(values) without a key function binds elements by array index; reordering or inserting items can cause mismatched labels and transitions. Providing a key function (e.g., d => d
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