From 510b4eaaaed7042ee4af66183107e3f4d8020b41 Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Mon, 17 Aug 2020 13:39:49 -0400
Subject: [PATCH] Fix #613

---
 httplib.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/httplib.h b/httplib.h
index bf2f64c..a6f9ee8 100644
--- a/httplib.h
+++ b/httplib.h
@@ -697,13 +697,13 @@ enum Error {
 class Result {
 public:
   Result(std::shared_ptr<Response> res, Error err) : res_(res), err_(err) {}
-  operator bool() { return res_ != nullptr; }
+  operator bool() const { return res_ != nullptr; }
   bool operator==(std::nullptr_t) const { return res_ == nullptr; }
   bool operator!=(std::nullptr_t) const { return res_ != nullptr; }
-  const Response &value() { return *res_; }
-  const Response &operator*() { return *res_; }
-  const Response *operator->() { return res_.get(); }
-  Error error() { return err_; }
+  const Response &value() const { return *res_; }
+  const Response &operator*() const { return *res_; }
+  const Response *operator->() const { return res_.get(); }
+  Error error() const { return err_; }
 
 private:
   std::shared_ptr<Response> res_;