Re: Is this legal C++?

From:

ymett <ymett.on.usenet@gmail.com>

Newsgroups:

comp.lang.c++.moderated

Date:

Mon, 15 Jun 2009 09:07:22 CST

Message-ID:

<5304de97-740a-41d7-9f25-470df0073c08@k2g2000yql.googlegroups.com>

On Jun 11, 2:21 pm, Seungbeom Kim <musip...@bawi.org> wrote:

Maxim Yegorushkin wrote:

On Jun 8, 6:21 am, arrowtackett <arrowtack...@gmail.com> wrote:

template<typename A> int getDimension(const vector<A> &, int = 0);
template<typename A> int getDimension(const A &, int);

While it works, it is not quite correct. The reason being that
std::vector<> has two template arguments.

....

So, to be pedantically precise and portable getDimension
signature should be:

template<class T, class A>
int getDimension(const vector<T, A> &vec, int dims = 0);

You're saying that

template<typename T>
void f(const std::vector<T>& v);

cannot receive a std::vector object? You're wrong. It's perfectly fine.

It can only take a vector using the default allocator. If you want it
to be able to take any vector you need the second template parameter.

Yechezkel Mett

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