On 11/28/2011 7:55 AM, Gennadiy Rozental wrote:

Hi,

How can I apply mutable action to the fusion sequence?

It seems like fusion::for_each does not allow non const operator().

Function objects are passed around by value. It does not make sense for them to be mutable. Better yet, give it a reference to some mutable state, like: struct f { f(T& state) : state(state) {} T& state; void operator()() const {} }; Regards, -- Joel de Guzman http://www.boostpro.com http://boost-spirit.com