SunXiaoShan · July 7, 2017 09:34
diff --git a/ObserveButtonParameter.m b/ObserveButtonParameter.m
 RAC(_btnButton, hidden) = [RACSignal
                            combineLatest:@[_textView.rac_textSignal]
                            reduce:^id _Nullable(NSString * text) {
    return @(text.length==0);
 }];
	RAC(_btnButton, hidden) = [RACSignal
	combineLatest:@[_textView.rac_textSignal]
	reduce:^id _Nullable(NSString * text) {
	return @(text.length==0);
	}];