iphone - What exactly is GCD and where should it be used? -


i think gcd todo asynchronous events, specifically, not sure type of events/where gcd comes in useful, apart obvious web requests.

could explain gcd , should/shouldn't used?

i suggest read chapter called "dispatch queues" in apple's concurrency programming guide. excellent document , depicts differences standard multi-thread programming. reading (will not take more 10 minutes read, quite more digest of course!) quite better other word can put here! link apple developer site


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