Re: [boost] optional<optional<T>>

3 Sep 2009


      I'm new to boost::optional<>. I quickly looked through the online docs to see what this class does, and this was my first impression:

	boost::optional< char > c;

	if ( c )
	{
		// should not enter this block
	}
	c = 'a';

	if ( c )
	{
		// should enter this block
	}
...
From what I was able to make out in 10-minutes, the class has a built-in boolean for the 'initialized' state so that it can be used in 'if()' statements. Also, the object it represents is not allocated until it is assigned ( if I'm not mistaken. )
I'm curious, what other bag of tricks does it come with?

Regards,
-Sid Sacek