Re: [Boost-users] [value_initialized] Non-default constructors

From: Niels Dekker - mail address until 2008-12-31 (nd_mail_address_valid_until_2008-12-31_at_[hidden])
Date: 2008-05-20 04:05:37

Edward Diener wrote:
> I have a class template, templated on type T, which I need to hold as
> a data value in the class. I use value_initialized for this type T
> effectively, and the value gets value initialized correctly when the
> default constructor of my class is used.
>
> If, however, I add a second constructor to my class which takes a T,
> for initializing my 'value_initialized<T> data' value, things do not
> work as well. Obviously I can still value initialize my data value,
> as in my default constructor, and then use 'boost::get(data) = arg;'
> to set the value of my value initialized variable. But this will not
> work if the type T is a top-level const, whereas I do want to
> initialize the data value in this case to the T arg passed into my
> second constructor.

> Never mind, the question was due to my unclear thinking about the
> problem.

So... how did you solve the problem?

I'm curious because I was also thinking of proposing to change 
value_initialized somewhat...  (I would like to get rid of its 
conversion operator!)

Kind regards,
--
Niels Dekker
http://www.xs4all.nl/~nd/dekkerware
Scientific programmer at LKEB, Leiden University Medical Center