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In software architecture, publish–subscribe or pub/sub is a messaging pattern where publishers categorize messages into classes that are received by subscribers. This is contrasted to the typical messaging pattern model where publishers send messages directly to subscribers.
Files for discussion (FfD) is for listing images and other media files which may be unneeded or have either free content or non-free content usage concerns. Files that have been listed here for more than 7 days are eligible for either deletion or removal from pages if either a consensus to do so has been reached or the nominator specifically requests deletion or removal and no objections are ...
Kanye West’s Yeezy.com advertisement during Sunday night’s Super Bowl stunned viewers with its bizarre vibe. But then what happened next shocked the station execs who ran it and media buyers ...
The observer design pattern is a behavioural pattern listed among the 23 well-known "Gang of Four" design patterns that address recurring design challenges in order to design flexible and reusable object-oriented software, yielding objects that are easier to implement, change, test and reuse.
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The Visitor [1] design pattern is one of the twenty-three well-known Gang of Four design patterns that describe how to solve recurring design problems to design flexible and reusable object-oriented software, that is, objects that are easier to implement, change, test, and reuse.
The memento pattern is a software design pattern that exposes the private internal state of an object. One example of how this can be used is to restore an object to its previous state (undo via rollback), another is versioning, another is custom serialization.
Blocking is the method by which administrators technically prevent users from editing Wikipedia. Blocks may be applied to user accounts, to IP addresses, and to IP address ranges, for either a definite or an indefinite time, to all or a subset of pages.