RESTinio
optional.hpp
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1 /*
2  restinio
3 */
4 
11 #pragma once
12 
13 #if defined(RESTINIO_EXTERNAL_OPTIONAL_LITE)
14  #include <nonstd/optional.hpp>
15 #else
17 #endif
18 
19 namespace restinio
20 {
21  template< class T >
23 
24  using nonstd::nullopt;
25  using nonstd::nullopt_t;
26 
27 } /* namespace restinio */
nonstd::optional_lite::nullopt_t
disengaged state tag
Definition: optional.hpp:810
optional.hpp
nonstd::optional_lite::optional
class optional
Definition: optional.hpp:839
nonstd::optional_lite::nullopt
const nullopt_t nullopt((nullopt_t::init()))
restinio
Definition: asio_include.hpp:21