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

Subject: Re: [Boost-users] [boost-users][array] Passing by reference
From: Ryan McConnehey (mccorywork_at_[hidden])
Date: 2010-02-25 21:49:54

Steven Watanabe wrote:
> 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
That worked.  Thanks.

Ryan