SDWebImage
2020-05-22 本文已影响0人
Silence_xl
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SDWebImage这个宏很惊艳
#ifndef dispatch_main_async_safe
#define dispatch_main_async_safe(block)\
if (dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL) == dispatch_queue_get_label(dispatch_get_main_queue())) {\
block();\
} else {\
dispatch_async(dispatch_get_main_queue(), block);\
}
#endif
image.png
