on Wed Jul 01 2009, "Vladimir Batov" <batov-AT-people.net.au> wrote:
From: "David Abrahams" <dave@boostpro.com>
... What's wrong with
int i = convert<int>::from(str, 0, locale_ = new_locale, throw_ = true);
I personally to not feel there is anything wrong per se with the above. The reason I did not pursue it was that it introduces a limit on the number of the parameters and I did not see it offering any major advantages to balance that shortcoming over the supported
int i = convert<int>::from(str, 0)(locale_ = new_locale)(throw_ = true);
On the other hand the supported interface seems to scale considerably better and is no longer to type:
int i = convert<int>::from(str, 0)(locale_ = new_locale)(throw_ = true); int i = convert<int>::from(str, 0, locale_ = new_locale, throw_ = true);
But again, it has the downside that none of your calls above can return an actual int. That can have unexpected effects, e.g. in some_function_template( convert<int>::from(str, 0) ) when the deduced template argument is actually your proxy type. -- Dave Abrahams BoostPro Computing http://www.boostpro.com