[libcxx-commits] [libcxx] Optimize the implementation of std::find_first_of to use any_of #129319 (PR #129574)

[Ali Raeisdanaei via libcxx-commits]

https://github.com/aliraeisdanaei updated https://github.com/llvm/llvm-project/pull/129574

>From 95937e669886d7b22c9106e6c503c9fa049ef3e1 Mon Sep 17 00:00:00 2001
From: aliraeisdanaei <mrrookie2 at gmail.com>
Date: Mon, 3 Mar 2025 14:14:06 -0500
Subject: [PATCH] Change the implementation of std::find_first_of.h to use
 any_of #129319

---
 libcxx/include/__algorithm/find_first_of.h | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/libcxx/include/__algorithm/find_first_of.h b/libcxx/include/__algorithm/find_first_of.h
index 45ec133154371..54c0dbd103ddb 100644
--- a/libcxx/include/__algorithm/find_first_of.h
+++ b/libcxx/include/__algorithm/find_first_of.h
@@ -26,11 +26,9 @@ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator1 __find_fir
     _ForwardIterator2 __first2,
     _ForwardIterator2 __last2,
     _BinaryPredicate&& __pred) {
-  for (; __first1 != __last1; ++__first1)
-    for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
-      if (__pred(*__first1, *__j))
-        return __first1;
-  return __last1;
+  return std::find_if(first1, last1, [&](const auto& x) {
+    return std::any_of(first2, last2, [&](const auto& y) { return x == y; });
+  });
 }
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>