A selector is definitely the mechanism used to pick a method to execute for an item, or perhaps the one of a kind identifier that replaces the title in the event the resource code is compiled. A selector acts like a dynamic operate pointer that factors on the implementation of a class’ system.
This delivers far better overall performance, nevertheless you need to Understand that Each time the watch’s bounds alter, the shadow route also should be up to date.
The selector could possibly be employed having an occasion of every in the classes to invoke its operate approach, While the implementation might be pretty unique for every.
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Q: Precisely what is a selector and what is its purpose? Provide an example of where And exactly how it might be made use of.
Have in mind, however, that modifications to Main Facts objects tend not to necessarily propagate promptly to other threads. In the common case, Main Data objects which can be loaded into memory will not be updated on a unique thread till All those objects are fetched again from persistent storage.
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