docs: add comment

rogerchi · Mar 27, 2022 · 5b0cad0 · 5b0cad0
1 parent 8ff5a22
commit 5b0cad0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/constructs/sampling-rule.ts b/lib/constructs/sampling-rule.ts
@@ -31,7 +31,10 @@ export class SamplingRule extends Rule {
     if (percentage >= 1 || percentage <= 0) {
       throw new Error('Percentage must be between 0 and 1');
     }
+    // Get the first three significant hex digits from the percentage
     const hexString = percentage.toString(16).slice(0, 5).slice(-3);
+
+    // Build up list of prefixes, starting from most significant digit
     let prefixes: string[] = [];
     let a;
     for (a = 0x0; a < parseInt(hexString[0], 16); a++) {