Re: [boost] [array] compile-time checked access

Subject: Re: [boost] [array] compile-time checked access
From: Tobias Loew (Tobias.Loew_at_[hidden])
Date: 2012-11-05 09:02:27

I used the "raw"-tag to quote the code. Here is it again without the tags:

...
So, code like 

    boost::array<int,2> test;
    test[2] = 1;
    test[-1] = 1;

compiles without warnings or erros.
Now, adding the following functions to array

        template<size_type i>
        reference at() 
        { 
            BOOST_STATIC_ASSERT( (i < N) );
            return elems[i]; 
        }

        template<size_type i>
        const_reference at() const
        { 
            BOOST_STATIC_ASSERT( (i < N) );
            return elems[i]; 
        }

would make it possible to write

    boost::array<int,2> test;
    test.at<2> = 1;
    test.at<-1> = 1;

which results in the expected error messages.

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