Improves prefix sum computer docs.

benoitf · Nov 9, 2021 · d2df861 · d2df861
1 parent 056fa40
commit d2df861
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/vs/editor/common/viewModel/prefixSumComputer.ts b/src/vs/editor/common/viewModel/prefixSumComputer.ts
@@ -115,6 +115,10 @@ export class PrefixSumComputer {
 		return this._getPrefixSum(this.values.length - 1);
 	}
 
+	/**
+	 * Returns the sum of the first `index + 1` many items.
+	 * @returns `SUM(0 <= j <= index, values[j])`.
+	 */
 	public getPrefixSum(index: number): number {
 		if (index < 0) {
 			return 0;