Re: [boost] Re: Boost Array Initialization Technique

From: Jonathan Wakely (cow_at_[hidden])
Date: 2005-06-01 05:48:21

On Wed, Jun 01, 2005 at 09:32:24AM +0200, Lo?c Joly wrote:

> AlisdairM a ?crit :
> 
> >Aggregate initialization is an important part of the array concept,
> >allowing it to act largely as a plug-in replacement for language
> >arrays, with the bonus it can be passed by value as well as by
> >reference.  The main drawback here is that we cannot deduce the size of
> >a boost::array, as you can with a language array.
> 
> From my point of view, the main drawback is that in the following code:
> 
> vector<double> v1(6);
> array<double, 6> v2;
> 
> v1's content is initialized, v2's content is not. In fact, array is 
> about the only class I know of that as a default constructor that does 
> not initialize member data to a legal and documented value. This I 
> strongly dislike.

This is true for any aggregate of builtins:

    struct S { char c; };
    int i[5];

array is supposed to behave like an array.

jon

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 it is time to reform."
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