Re: [boost] function.hpp: some ideas

From: John Max Skaller (skaller_at_[hidden])
Date: 2001-05-07 14:28:41

Douglas Gregor wrote:

> >       I have no idea what 'set, clear, empty' etc
> > might be for: functions can't be set, cleared,
> > or emptied. They should act like values, and be
> > callable.
> >
> >       {Have I missed something deep here?]
> 
> Prefix 'function' with 'boost::' and you've missed something :)
> boost::function is a generalized function object adaptor that is declared
> with some given function signature and that can contain any function object
> with a compatible signature. It overloads the function call operator to call
> the underlying function object's function call operator. One of its uses (the
> one we're debating currently) is as a callback.

        Are you saying that 'set', for example, is to be used to
change the object to which the adaptor delegates?
So for example, if an adaptor f were registered as a callback,
the actual callback can be dynamically changed without
changing the object registered?

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