common: stop importing std::{bind,ref,cref} into namespace ndn
And reduce the usage of std::bind() throughout the codebase.
C++14 lambdas are easier to understand for humans and more
likely to be optimized by the compiler.
Change-Id: Ia59fad34539710f8801c52914896ce426fb7e538
diff --git a/tests/unit/face.t.cpp b/tests/unit/face.t.cpp
index f7c6132..eaab9b6 100644
--- a/tests/unit/face.t.cpp
+++ b/tests/unit/face.t.cpp
@@ -1,6 +1,6 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
- * Copyright (c) 2013-2020 Regents of the University of California.
+ * Copyright (c) 2013-2021 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
@@ -35,6 +35,7 @@
namespace tests {
using ndn::util::DummyClientFace;
+using std::bind;
struct WantPrefixRegReply;
struct NoPrefixRegReply;