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43 lines
783 B
C++
43 lines
783 B
C++
// Copyright 2021 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/lambda2.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <sstream>
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#include <string>
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template<class T> T from_string_1( std::string const& s )
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{
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using namespace boost::lambda2;
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std::istringstream is( s );
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T t{};
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( std::ref( is ) >> _1 )( t );
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return t;
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}
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template<class T> T from_string_2( std::string const& s )
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{
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using namespace boost::lambda2;
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std::istringstream is( s );
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T t{};
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( is >> _1 )( t );
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return t;
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}
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int main()
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{
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BOOST_TEST_EQ( from_string_1<int>( "123" ), 123 );
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BOOST_TEST_EQ( from_string_2<int>( "456" ), 456 );
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return boost::report_errors();
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}
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