title: C++ : using nlohmann json in project
body: <p>I am trying to  use <a href="https://github.com/nlohmann/json" rel="nofollow noreferrer">nlohmann json</a> in my C++ project. I extracted the zipped file after I downloaded it from github. I renamed the extracted folder to be <code>nlohmann_json</code> and just copied it inside my project .</p>
  
  <p>The github doc says :</p>
  
  <p><em>json.hpp is the single required file in single_include/nlohmann or released here. You need to add</em></p>
  
  <pre><code>#include &lt;nlohmann/json.hpp&gt;
  
  // for convenience
  using json = nlohmann::json;
  </code></pre>
  
  <p>So in my <code>.cpp</code> file, I have the following lines :</p>
  
  <pre><code>#include "nlohmann_json/include/nlohmann/json.hpp"
  
  using json = nlohmann::json;
  </code></pre>
  
  <p>But Visual Studio 2015 IDE shows as tooltip the following message:</p>
  
  <p><strong>namespace nlohmann has no member json</strong></p>
  
  <p>After typing just <code>nlohmann::</code> , I get an auto suggestion of <code>json_pointer</code> but not <code>json</code>.</p>
  
  <p>What is going wrong actually ?</p>