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lemonkey/waitForBlock.m

Forked from quellish/waitForBlock.m
Created October 28, 2016 01:14
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Pseudo-sample of synchronous use of Core Data performBlock: using dispatch group
Raw
waitForBlock.m
group = dispatch_group_create();
dispatch_group_enter(group);
[context performBlock:^{
result = [context executeFetch:...
dispatch_group_leave(group);
}];
groupResult = dispatch_group_wait(group, DISPATCH_TIME_FOREVER);
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