44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
#include "nonstd/any.hpp"
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#include "nonstd/optional.hpp"
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#include "nonstd/variant.hpp"
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#include <cassert>
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#include <string>
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using namespace nonstd;
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int main()
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{
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std::string hello = "hello, world";
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{
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optional< int > var;
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assert( ! var );
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var = 7 ; assert( *var == 7 );
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var = 7 ; assert( var.value() == 7 );
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}{
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any var;
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assert( ! var.has_value() );
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var = 'v' ; assert( any_cast<char>( var ) == 'v' );
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var = 7 ; assert( any_cast<int >( var ) == 7 );
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var = 42L ; assert( any_cast<long>( var ) == 42L );
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var = hello; assert( any_cast<std::string>( var ) == hello );
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}{
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variant< char, int, long, std::string > var;
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assert( ! var.valueless_by_exception() );
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assert( get< 0 >( var ) == char() );
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var = 'v' ; assert( get<char>( var ) == 'v' );
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var = 7 ; assert( get<int >( var ) == 7 );
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var = 42L ; assert( get<long>( var ) == 42L );
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var = hello; assert( get<std::string>( var ) == hello );
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}
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}
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// cl -nologo -EHsc -I../../any-lite/include -I../../optional-lite/include -I../../variant-lite/include 04-any-optional-variant.cpp && 04-any-optional-variant
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// g++ -Wall -I../../any-lite/include -I../../optional-lite/include -I../../variant-lite/include -o 04-any-optional-variant 04-any-optional-variant.cpp && 04-any-optional-variant
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