Re: [Boost-users] Request to know about "dynamic expression evaluation"

From: Damien Hocking (damien_at_[hidden])
Date: 2007-10-24 22:50:22

Ganesh,

it's not 100% clear (at least to me) what you want to do.  The main 
question is, do you know the expression you want to evaluate at 
compile-time, or run-time?  If it's compile-time, you can use 
compile-time expression templates, like this:

http://www.ddj.com/cpp/184401627

If you're expression is constructed at run-time, it's more difficult and 
you get into things like expression tree traversal and bytecode 
generation.  Some of the serious C++ template experts might be able to 
offer some further advice.

Damien

Borse, Ganesh wrote:
> Hi,
> You recommended checking the "expression templates".
> However, expression templates (xpressive) provides the means of parsing 
> the input expressions in to tokens.
> It does not have the support for evaluating these expressions. --- 
> please correct me if I'm wrong.
> Thanks,
> Ganesh
> __________