Re: [boost] Re: boost::function feature request?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2004-11-12 09:47:47

Aleksey Gurtovoy wrote:
> How about
>
>     function_property< boost::function<bool()> > is_enabled;
>
> or
>
>     function_property<bool()> is_enabled;
>
> or even
>
>     property<bool()> is_enabled;

FWIW, I went with

    inline bool true_ { return true; }
    inline bool false_ { return false; }

which allows

    is_enabled = true_;

I don't like the word "property", or the property-based style of 
programming, in general. :-)

As a side benefit, false_ comes in handy for on_click, too (which is a 
function<void()>).

One other observation: keeping a function<> always initialized with the 
appropriate default (a variation of the Null Object pattern) leads to much 
cleaner code.