From d3887e41a846d2ddd561d5dd84836345ab81502d Mon Sep 17 00:00:00 2001
From: Vaughn Cato <vcato@avtr.com>
Date: Wed, 9 Aug 2023 20:44:33 -0400
Subject: [PATCH] Change to ConstStringRef

Made it use std::visit() instead of std::holds_alternative()
---
 include/ftxui/util/ref.hpp | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/include/ftxui/util/ref.hpp b/include/ftxui/util/ref.hpp
index d8f0bae74..59b04bd19 100644
--- a/include/ftxui/util/ref.hpp
+++ b/include/ftxui/util/ref.hpp
@@ -105,12 +105,13 @@ class ConstStringRef {
 
   const std::string_view getStringView() const
   {
-    if ( std::holds_alternative<std::string_view>(variant_) )
-      return std::get<std::string_view>(variant_);
-    else if ( std::holds_alternative<std::string *>(variant_) )
-      return *std::get<std::string *>(variant_);
-    else if ( std::holds_alternative<std::string>(variant_) )
-      return std::get<std::string>(variant_);
+    struct Fn {
+      std::string_view operator()(std::string_view x) const { return x; }
+      std::string_view operator()(std::string &x) const { return x; }
+      std::string_view operator()(std::string *x) const { return *x; }
+    };
+
+    return std::visit(Fn(), variant_);
   }
 };