From c204a14def407255d21355cd46e2acb0d9df8ed8 Mon Sep 17 00:00:00 2001
From: Jishnu Bhattacharya <jishnub.github@gmail.com>
Date: Sun, 26 Mar 2023 09:34:16 +0530
Subject: [PATCH] Add comment about type-stability

Co-authored-by: Anshul Singhvi <anshulsinghvi@gmail.com>
---
 src/bootstrap.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/bootstrap.jl b/src/bootstrap.jl
index 96e98367..ab8bb0ad 100644
--- a/src/bootstrap.jl
+++ b/src/bootstrap.jl
@@ -30,6 +30,7 @@ function bootweights(design::SurveyDesign; replicates = 4000, rng = MersenneTwis
         cluster_sorted = sort(substrata, design.cluster)
         cluster_sorted_designcluster = cluster_sorted[!, design.cluster]
         cluster_weights = cluster_sorted[!, design.weights]
+        # Perform the inner loop in a type-stable function to improve runtime.
         _bootweights_cluster_sorted!(cluster_sorted, cluster_weights,
             cluster_sorted_designcluster, replicates, rng)
         substrata_dfs[h] = cluster_sorted