Subtle out of bounds checking need documenting (#128)

* Subtle out of bounds checking need documenting * format comment Co-authored-by: Mike Bostock <[email protected]>
d3 · Jun 4, 2021 · 0b51543 · 0b51543
1 parent 22d1739
commit 0b51543
Showing 1 changed file with 2 additions and 4 deletions.
diff --git a/src/voronoi.js b/src/voronoi.js
@@ -278,10 +278,8 @@ export default class Voronoi {
         case 0b1001: e0 = 0b0001; continue; // bottom-left
         case 0b0001: e0 = 0b0101, x = this.xmin, y = this.ymin; break; // left
       }
-
-      // Implicit out of bounds checking.
-      // P[j] or P[j+1] may become undefined and the conditional statement will be
-      // executed.
+      // Note: this implicitly checks for out of bounds: if P[j] or P[j+1] are
+      // undefined, the conditional statement will be executed.
       if ((P[j] !== x || P[j + 1] !== y) && this.contains(i, x, y)) {
         P.splice(j, 0, x, y), j += 2;
       }