Re: std::binder1st and transform_iterator (was Re: [boost] iterator adaptors & concept checks)

From: Kresimir Fresl (fresl_at_[hidden])
Date: 2001-03-29 11:48:21

Hi Jeremy, 

On Thursday 29 March 2001 18:13, Jeremy Siek wrote:

> What a bummer, it looks like we can't legally use std::binder1st with
> transform_iterator. The requirement for default constructor is not
> accidental, it is absolutely required because the function object needs to
> be contained in the iterator, and the standard requires iterators to have
> default constructors. We'll have to use a replacement for binder1st in the
> example.

> Perhaps the lack of default constructor in std::binder1st qualifies as a
> DR?

Is it possible (as a `first aid' ;O) to add default constructors to 
boost::binder1st and other related function object adapters in 
<boost/functional.hpp> ? 

Sincerely,

Kresimir