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Re: Notification Vs Delegation

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Re: Notification Vs Delegation

Subject: Re: Notification Vs Delegation
From: Peter Ammon <email@hidden>
Date: Fri, 31 Oct 2008 17:59:21 -0700


On Oct 31, 2008, at 5:33 PM, John Joyce wrote:

This may be a pointless and silly question, but
is Delegation faster than Notification (generally) ?

Delegation allows you to check if the client is interested, via respondsToSelector:. If the delegate does not implement the method (or there is no delegate), then you may be able to save some work. There's no equivalent way to tell if any object is listening for a notification.

Though sometimes whether the object notifies is controllable, as in [NSView setPostsFrameChangedNotification:]

-Peter

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  >Notification Vs Delegation (From: John Joyce <email@hidden>)




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