kvo_observe.m
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block_retain.m
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kvo_observe.m
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[self addObserver:self↵
forKeyPath:@"data.value"↵
options:NSKeyValueObservingOptionNew↵
context:NULL];↵
↵
- (void)observeValueForKeyPath:(NSString *)path↵
ofObject:(id)obj↵
change:(NSDictionary *)change↵
context:(void *)ctx {↵
if ([path isEqualToString:@"data.value"]) {↵
[self update:change[@"new"]];↵
}↵
}
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