Re: [Boost-users] function template with a universal reference to a specific type

Subject: Re: [Boost-users] function template with a universal reference to a specific type
From: Good Guy (xfsgpr_at_[hidden])
Date: 2018-12-30 16:16:44

I don't know answer to your question but if you want to know about 
another generic C++ newsgroup then you can try this:

<news://nntp.aioe.org/comp.lang.c++>

It is very active but like any unmoderated newsgroups, you can expect 
the thread to drift away from the main question.

Good luck and a very Happy & Prosperous New Year

On 30/12/2018 15:04, Ireneusz Szcześniak via Boost-users wrote:
> Hi,
>
> I'm writing to ask a C++ question, not specifically Boost-related, but 
> this list is the best place I know.
>
> How can I write a function template, which has a parameter of the 
> universal reference to a specific type?
>
> I can write a function template like this:
>
> template <typename T>
> void
> foo(T &&t)
> {
>   // The primary template implementation.
>   cout << "Primary: " << __PRETTY_FUNCTION__ << endl;
> }
>
> And so I can call this function with an expression of any value 
> category, and any type, cv-qualified or not, like this:
>
> int
> main()
> {
>   foo(1);
>   int i = 1;
>   foo(i);
>   const int ci = 1;
>   foo(ci);
> }
>
> In my code I need to provide different implementations of foo for 
> different types (and these types are templated).  How can I accomplish 
> that?
>
>
> Best,
> Irek