Re: [Boost-users] [proto] defining function call operators on expressions

Subject: Re: [Boost-users] [proto] defining function call operators on expressions
From: Joel Falcou (joel.falcou_at_[hidden])
Date: 2010-03-02 02:24:28

Manjunath Kudlur wrote:
>  Is there a way to define member functions in the
> wrapper class that are valid only for certain kinds of expressions? I
> experimented a little with boost::enable_if, but that didn't seem to
> work. Any thoughts?
> 

Look at how the proto calculator works. You just need to compute () ariy 
using a transform adn then juse a static assert in the expression evaluation