空值判断

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//空值判断
BOOL isNotNULL(id object);
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BOOL isNotNULL(id object) {
if ([object isKindOfClass:[NSNull class]]) {
return NO;
} else if ([object isKindOfClass:[NSString class]]) {
if ([object isEqualToString:@"(null)"]) {
return NO;
}
} else if (!object) {
return NO;
}
return YES;
}