Re: [Boost-users] boost:array lacks a statically-checked get()

On 6/4/07, Chris Weed wrote:

On 6/3/07, Benoit Hudson wrote:

...

Reading the archives, I see that the idea of adding a template <unsigned i> T get(); function to boost::array has been somewhat summarily rejected as unnecessary: http://lists.boost.org/boost-users/2005/08/12983.php et seq.

And yet I'm finding myself wanting it repeatedly. Here are three places I've seen it crop up:

Isn't this functionality available using the boost::fusion extension for array? You might want to take a look at boost::fusion. Chris

Doesn't appear to. The following compiles against CVS of 5 minutes ago, without error: #include #include #include boost::array arr = {{ 1, 2, 3}}; int x() { // arr[4] return boost::fusion::at_c<4>(arr); } It compiles down to a call to __assert_fail, which is the same behaviour as just using arr[4]. -- Benoît