From b5e635a16e23780a5ccb6a0880c37dbd03e14bfc Mon Sep 17 00:00:00 2001
From: Neargye <neargye@gmail.com>
Date: Fri, 31 Aug 2018 18:42:59 +0500
Subject: [PATCH] add cstring::at

---
 include/nameof.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/nameof.hpp b/include/nameof.hpp
index e3faa85..c1505b1 100644
--- a/include/nameof.hpp
+++ b/include/nameof.hpp
@@ -147,6 +147,11 @@ class cstring final {
 
   constexpr const char& operator[](std::size_t i) const { return str_[i]; }
 
+  constexpr const char& at(std::size_t i) const {
+    return (i < size_) ? str_[i]
+                       : (throw std::out_of_range("cstring::at"), str_[0]);
+  }
+
   constexpr const char& front() const { return str_[0]; }
 
   constexpr const char& back() const { return str_[size_ - 1]; }