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By: a guest on Apr 30th, 2012  |  syntax: None  |  size: 0.29 KB  |  hits: 10  |  expires: Never
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  1. #if __has_feature(arr)
  2. # if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_5_0
  3. #  define block_unretained(obj) id _block_##obj __weak = (obj)
  4. # else
  5. #  define block_unretained(obj) id _block_##obj __unsafe_unretained = (obj)
  6. #else
  7. # define block_unretained(obj) id _block_##obj __block = (obj)
  8. #endif
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