Re: [boost] phoenix::bind

Subject: Re: [boost] phoenix::bind
From: Peter Dimov (pdimov_at_[hidden])
Date: 2008-10-01 12:32:00

Joel de Guzman:

> Maybe you want:
>
>      let(_a = 0)[ ++_a ]

Maybe I do. :-)

>     phx::for_each(_1, lambda[std::cout << _1 << std::endl])
>
> Notice that like protect, there are two function invocations happening
> here.

The confusion here comes from the fact that the above would work if lambda[] 
had "unlambda" semantics, that is, if it returned a function object that was 
not a phoenix expression.

>         - \      \
> double - /\ f . /\ x. f(f x)
>        - /  \   /  \

lambda( _f = _1 )[ bind( _f, bind( _f, _1 ) ) ] ?