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From: Aleksey Gurtovoy (agurtovoy_at_[hidden])
Date: 2004-11-04 13:22:00

Peter Dimov writes:
> When using boost::function<bool()> to implement event callbacks such as
> is_visible or is_enabled, it's very convenient to pass 'true' or 'false'
> directly, instead of going through bind( identity<bool>(), true ). An UI
> button I recently did even had separate bool properties in addition to the
> callback events for these reasons.
> I wonder whether it's reasonable to add
> this_type& operator=( T const & t );
> to function<T()> that does the obvious thing.
> Of course f = t; is merely a shorthand way of spelling f =
> boost::lambda::constant(t), but a dependency on lambda isn't always
> desirable.
> Thoughts?

I ended up with 'f = always( whatever )', which grew on me to the point
that I don't wish for the above anymore. FWIW.

Aleksey Gurtovoy
MetaCommunications Engineering

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