Re: [boost] [safebool] Can we generalize it and put it into utilities?

Subject: Re: [boost] [safebool] Can we generalize it and put it into utilities?
From: Vladimir Batov (vladimir.batov_at_[hidden])
Date: 2009-03-30 19:08:36

Based on the suggestions from Steven Watanabe and Robert Stewart I've uploaded
safebool.hpp into the Vault. It can be deployed as

struct Foo
{ ...
   operator safebool<Foo>::type() const { return safebool<Foo>(condition); }
};
or operator safebool<Foo>::type() const { return safebool<Foo>::make(c); }
or operator safebool<Foo>::type() const { return make_safebool<Foo>(c); }

I still like the first one but the other two seemed strong contenders and I
realize they might be marginally faster (in theory anyway).

Documented the need, the usage and the solution. 

Best,
V.