Re: [Boost-users] [mpl]... is there an mpl::string

Subject: Re: [Boost-users] [mpl]... is there an mpl::string
From: Noah Roberts (roberts.noah_at_[hidden])
Date: 2009-04-13 11:45:34

Eric Niebler wrote:
> Eric Niebler wrote:
>> Eric Niebler wrote:
>>> There's another consideration that I've been glossing over. 
>>> mpl::string isn't *really* random access. Since 
>>> mpl::string<'a','b','c'> designates the same character sequence as 
>>> mpl::string<'abc'>, it takes O(N) template instantiations to find the 
>>> N-th element in the sequence, at least in the current implementation. 
>>> I'd like to fix that, but I don't know how (yet).
>>
>> Now this is really bothering me. The right thing to do is replace the 
>> current implementation with one in which mpl::string is a front- and 
>> back-extensible bidirectional sequence, and give up with the random 
>> access pretense. :-(
> 
> I've made this change. mpl::string is no longer random access (it never 
> really was). Also, I've changed c_str to be a separate metafunction that 
> works with any forward sequence.
> 
> Thanks particularly to Noah Roberts for the good feedback.
> 
No problem.

Now someone just needs to make format<> :P