valueAt method

num valueAt(
  1. int index
)

The current value at index (0-based), in O(log n). Requires 0 <= index < length. Audited: 2026-06-12 11:26 EDT

Implementation

num valueAt(int index) =>
    // Bounds are enforced by rangeSum, so no separate check is needed.
    // ignore: no_equal_arguments -- a single-element sum is the degenerate range [index, index]
    rangeSum(index, index);