Re: boost::tuple<...involving template arguments...>

From:

"Victor Bazarov" <v.Abazarov@comAcast.net>

Newsgroups:

comp.lang.c++

Date:

Tue, 12 Feb 2008 17:04:02 -0500

Message-ID:

<fot54i$i3v$1@news.datemas.de>

er wrote:

On Feb 12, 4:34 pm, "Victor Bazarov" <v.Abaza...@comAcast.net> wrote:

er wrote:

I have the following:

template<typename T>
class A: public std::unary_function<const boost::tuple<double,const
T&>&, void>{
public:
typedef typename std::unary_function<const boost::tuple<double,const
T&>&, void> parent_type;
typedef typename parent_type::argument_type argument_type;
void operator()(argument_type t)const{
t.get<0>(); //error: expected primary-expression before ')' token
t.get<1>(); //error: expected primary-expression before ')' token
};
};

Similar code without the template (i.e. fix say T = double) works
fine.

Have you tried a different compiler? Have you tried asking in
a Boost discussion forum?

As I can see, the new standard template 'tuple' has 'get' members
that happen to have one argument. Your code calls 'get' without
any arguments. Perhaps you should RTFM...

V
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Thanks. I'm only aware of t.get<N>() or get<N>(t) and both give an
error... is there something that i don't know then?

I guess you need to know that there exists this:
http://www.boost.org/more/mailing_lists.htm#users
....and other stuff on their web site. Use it.

V
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Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask