ceph/src/boost/libs/lambda2/test/subscript.cpp

   1 // Copyright 2021 Peter Dimov
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // https://www.boost.org/LICENSE_1_0.txt
   4
   5 #include <boost/lambda2.hpp>
   6 #include <boost/core/lightweight_test.hpp>
   7 #include <functional>
   8
   9 int main()
  10 {
  11     using namespace boost::lambda2;
  12
  13     int x[] = { 1, 2, 3, 4 };
  14
  15     BOOST_TEST_EQ( _1[0](x), x[0] );
  16     BOOST_TEST_EQ( _1[_2](x, 1), x[1] );
  17     BOOST_TEST_EQ( (_1[_2] + _3[_4])(x, 2, x, 3), x[2] + x[3] );
  18     BOOST_TEST_EQ( std::bind(_1 + _2, _1[_2], _3[_4])(x, 2, x, 3), x[2] + x[3] );
  19
  20     _1[0](x) = 7;
  21     BOOST_TEST_EQ( x[0], 7 );
  22
  23     _1[_2](x, 1) = 8;
  24     BOOST_TEST_EQ( x[1], 8 );
  25
  26     return boost::report_errors();
  27 }