From 296956caccb5bd738ceadcd35cc1bb7340c7dcc3 Mon Sep 17 00:00:00 2001
From: David Marcec <dmarcecguzman@gmail.com>
Date: Mon, 3 Aug 2020 17:56:24 +1000
Subject: [PATCH] More agressive concept for stl containers

---
 src/common/concepts.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/common/concepts.h b/src/common/concepts.h
index d71c6443c3..b804077148 100644
--- a/src/common/concepts.h
+++ b/src/common/concepts.h
@@ -4,15 +4,17 @@
 
 #pragma once
 
-#include <concepts>
-
 // Check if type is like an STL container
 template <typename T>
 concept IsSTLContainer = requires(T t) {
     typename T::value_type;
+    typename T::iterator;
+    typename T::const_iterator;
     // TODO(ogniK): Replace below is std::same_as<void> when MSVC supports it.
     t.begin();
     t.end();
+    t.cbegin();
+    t.cend();
     t.data();
     t.size();
 };