Re: [Boost-users] Using boost::lambda::bind with std::transform

From: Sebastian Redl (sebastian.redl_at_[hidden])
Date: 2006-04-27 12:45:05

Kobi Cohen-Arazi wrote:

> Will not work !
> Why adding the & hurts?
> Kobi.

Because you attempt to bind a non-const reference to a temporary object 
(the return value of get(). The compiler refuses to do that.
The compiler doesn't catch another possibly problematic situation, 
though, and that's replace's return by reference. You're returning a 
reference to a function parameter, and that's generally not a good idea.

On the other hand, the removeConst function does absolutely nothing in 
your program except create yet another copy of the string. get() already 
returns a copy. The function is const, but its return value is not a 
const reference.

Sebastian Redl