Re: [boost] safe bool operator

Subject: Re: [boost] safe bool operator
From: Peter Dimov (pdimov_at_[hidden])
Date: 2010-03-01 15:41:19

Domagoj Saric wrote:
> It enables a one liner implementation for a safe_bool operator:
>
> class my_class
> {
> public:
>    bool some_is_valid_function() const;
>    operator boost::unspecified_bool_type() const { return
>          boost::make_safe_bool( some_is_valid_function() ); }

Using a single type allows unrelated classes to compare equal with 
operator==.