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  1. #1
    Senior Member
    Join Date
    Jan 2014
    Location
    Banglore
    Posts
    289

    Integrating C++/CLI with ISO-C++

    The type of a string literal, such as "Pooh", is treated differently within C++/CLI; it is more nearly a kind of System::String than a C-style character string pointer. This has a visible impact with regard to the resolution of overload functions. For example:


    public ref class R {
    public:
    void foo( System::String^ ); // (1)
    void foo( std::string ); // (2)
    void foo( const char* ); // (3)
    };
    void bar( R^ r )
    {
    // which one?
    r->foo( "Pooh" );
    }

    In ISO-C++, this resolves to instance (3)a string literal is more nearly a kind of constant pointer to character than it is an ISO-C++ standard library string type. Under C++/CLI, however, this call resolves to (1)a string literal is now more nearly a kind of System::String than pointer to character. The type of a string literal is treated differently within C++/CLI. It has been designed to be more nearly a kind of System::String than a C-style character string pointer.


    void foo( System::String^ ); // (1)
    void foo( std::string ); // (2)
    void foo( const char* ); // (3)
    void bar( R^ r ){ r->foo( "Pooh" ); } // which foo?
    ISO-C++: // (3) is invoked ...
    C++/CLI: // (1) is invoked ...

  2. #2
    Senior Member
    Join Date
    Jan 2015
    Posts
    567

    Re: Integrating C++/CLI with ISO-C++

    I agree with this post and example.

 

 

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