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heliang219/gist:a090c62ce6ea8ff57a6d14433ae1506e

Forked from tonyarnold/gist:2010649
Created December 2, 2019 03:48
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Exhaustively check if an Objective-C object is "empty"
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gistfile1.m
static inline BOOL CBIsEmpty(id obj) {
return obj == nil
|| (NSNull *)obj == [NSNull null]
|| ([obj respondsToSelector:@selector(length)] && [obj length] == 0)
|| ([obj respondsToSelector:@selector(count)] && [obj count] == 0);
}
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