参考:https://www.jianshu.com/p/3b12bb90bb15
NSArray *dictArray = nil;//存放从服务器返回的字典数组
dispatch_queue_t queue = dispatch_queue_create("queue", DISPATCH_QUEUE_CONCURRENT);
dispatch_async(queue, ^{
dispatch_apply(dictArray.count, queue, ^(size_t index){
//字典转模型
});
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"主线程更新");
});
});
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