Re: [Boost-users] Defining Statements with Proto

Subject: Re: [Boost-users] Defining Statements with Proto
From: Joel.Falcou_at_[hidden]
Date: 2010-01-07 03:31:11

> Is there any advantage to doing:
>
>      // An if_ "operator"
>      template<typename Expr>
>      typename boost::proto::result_of::make_expr<
>        boost::proto::tag::function,
>        Domain,
>        keyword::if_,
>        Expr>::type
>      if_(Expr const &expr)
>      {
>        return boost::proto::make_expr<boost::proto::tag::function,
> Domain>(
>          keyword::if_(),
> 	 expr);
>      }
>
> over:
>
>      typedef Wrapper<boost::proto::terminal<keyword::if_>::type>
> IfTerminal;
>
>     // An if_ "operator."
>     namespace {
>        const IfTerminal if_ = {{}};
>     }
>
> and letting proto take care of creating the function expression?
> Perhaps the former has one or two less template instantiations
> but the latter is certainly easier to maintain

I can't find lu right now but i made an extensive test for this and the
function form id more scalable in terme of compile time and exe size
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