Re: [Boost-users] [boost-users][array] Passing by reference

Subject: Re: [Boost-users] [boost-users][array] Passing by reference
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-02-25 21:08:15

AMDG

Ryan McConnehey wrote:
> I'm wanting to pass a boost::array by reference to a function.  
> Normally, this isn't a problem.  My first approach yielded a compiler 
> error stating boost::array needs template parameters.  When adding the 
> template parameters (approach 2) the compiler then states boost::array 
> needs T to be a compile time constant.  I want the function to be able 
> to take different boost::array sizes.  Can boost::array be passed by 
> reference without knowing the size of the array at compile time?  Any 
> help would be great.
>
> Ryan
>
> Approach 1
> void extract (boost::array & var) {}
>
> Approach 2
> template<typename T, typename S>
> void extract (boost::array<T, S> & var) {}

Try

template<typename T, std::size_t N>
void extract(boost::array<T, N> & var) {}

In Christ,
Steven Watanabe