'%' is a function word in Objective C, such as '%d" to print a number, How to print a '%' in a string? that is easy, just '%%' Codeself.txtPercent.text=  [NSString stringWithFormat:@"%d%%", (int)sender.value]; more »

Submitting your website to the search engines and even buying CPC services are not enough for SEO. If you want your website to become popular, please don't be shy. You have to let everyone… more »

Nowadays, there are a lot of good tools to build websites such as wix and light cms. The users can choose a template. Then users can change their logo. If they need some new elements, they just need to drag and drop to there. That is very easy. Some… more »

I have heard about a lot of email marketing. Some companies will give some rewards to anyone are happy to receive their marketing material. This way, the marketing material can go to a lot of different email box. My question more »

This morning, there are some problems of our company email. I am a bit worrying about that. Our company website and email service are in the same web hosting company. Then I phoned to their support hotline. The problem is small, Our email has been just… more »

Code@property (nonatomic,retain) TipRecord*record; To check the object in the code above, that should check whether the object is nil. Codeif(self.record == nil) Please note that, that is a pointer. If it has not initialized yet, it will be nil, not… more »