From a02407b35d3f61cf472088c42591d0cccde55ebd Mon Sep 17 00:00:00 2001
From: Jidong Xiao <xiaoj8@rpi.edu>
Date: Mon, 31 Mar 2025 20:11:54 -0400
Subject: [PATCH] making notes about the function pointer usage

---
 lectures/22_hash_tables_I/hash_test.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lectures/22_hash_tables_I/hash_test.cpp b/lectures/22_hash_tables_I/hash_test.cpp
index a68bc63..7420206 100644
--- a/lectures/22_hash_tables_I/hash_test.cpp
+++ b/lectures/22_hash_tables_I/hash_test.cpp
@@ -23,6 +23,7 @@ unsigned int betterHash(const std::string& k, unsigned int N) {
 }
 
 // a good hash function should distribute values evenly across N buckets.
+// note that function pointers are used here
 void testCollisions(unsigned int (*hashFunc)(const std::string&, unsigned int), 
                     const std::vector<std::string>& testStrings, unsigned int N) {
     std::unordered_map<unsigned int, int> bucketCounts;
@@ -53,6 +54,7 @@ std::vector<std::string> generateTestStrings(int count) {
     return testStrings;
 }
 
+// note that function pointers are used here
 void benchmark(unsigned int (*hashFunc)(const std::string&, unsigned int),
                const std::vector<std::string>& testStrings, unsigned int N) {
     clock_t start = clock();