Events/Observer pattern

[Corrado Santoro]

Matthias Lang wrote:
> I don't think there's anything in the standard library which does
> that.
Why? Don't you think that gen_event could exactly fit in the problem?

--Corrado

> doublec writes:
> 
>  > I want to have a process that sends information out to other
>  > processes at regular intervals. Those other processes should be
>  > able to register to receive information or unregister to stop
>  > receiving them. Classic 'observer' pattern stuff in OO.
>  > 
>  > I thought of having the information provider process accept pid's
>  > on register, and when it needs to send out the information it just
>  > goes over the list of pid's sending a message to the receiver.
>  > 
>  > Is that a reasonable approach? Is there anything in the standard
>  > library that provides this functionality already that I should be
>  > looking at?

-- 
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