core: drop std::function and ndn::Exclude from common.hpp, add ndn::optional
Change-Id: Ie3983d8b6f9929430efd8ada8d942e3f95755cd4
diff --git a/tools/nfdc/find-face.hpp b/tools/nfdc/find-face.hpp
index 120718b..68e5f7b 100644
--- a/tools/nfdc/find-face.hpp
+++ b/tools/nfdc/find-face.hpp
@@ -1,6 +1,6 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2017, Regents of the University of California,
+/*
+ * Copyright (c) 2014-2018, Regents of the University of California,
* Arizona Board of Regents,
* Colorado State University,
* University Pierre & Marie Curie, Sorbonne University,
@@ -125,7 +125,7 @@
* \return canonical FaceUri if canonization succeeds, input if canonization is unsupported
* \retval nullopt canonization fails; m_errorReason describes the failure
*/
- ndn::optional<FaceUri>
+ optional<FaceUri>
canonize(const std::string& fieldName, const FaceUri& input);
/** \brief retrieve FaceStatus from filter