So I have put off starting up a new WordPress website for a few months now, because I delivered my super adorable baby boy in January this year. And any parent will often find that they do not have the luxury of working several hours at a go (which most developers truly enjoy). Well, I’ve… Read More WordPress On VPS (Step 1): Register a Domain Name
To obtain the screen size based on the orientation and type of device, use this: screenWidth will return the width, and screenHeight, the height of your screen, even when your device is in the landscape orientation.
You can store CGRect items into an NSArray. You need to store them as NSValue types: Here’s how to retrieve the items later on:
If you need to access the value of some variable in your app later on, be it in the same class or not, you might like to save it first using NSUserDefaults. Here’s an example with an NSString variable: If you have an NSInteger type variable instead, change your second line to: You may implement… Read More iOS: Save/Retrieve Data Using NSUserDefaults
When you have an NSArray object containing NSString objects in your View Controller, you might want to create a static version of it, especially when the user will only see the same values each time the view appears. First, add your C array pointers to NSString constants by following instructions in my earlier post. In… Read More iOS: Statically Create an NSArray Object in View Controller
Concurrent Versioning System (CVS) aids team members share codes and files very effectively, and tracks the changes made to any file. Its development has not been very active for the past few years, but many still see the benefits of such a sharing system. There are several free central repository or file sharing systems these… Read More CentOS: Installing a CVS Server
Pretty permalinks allow the links on your posts to appear like this: http://your-domain.com/post-name/, instead of http://your-domain.com/?p=N, where N is some id number. Ugly permalinks are used by default, so if you decide to switch over, you need to follow the instructions here. But it isn’t a straightforward process. I’m using an Apache Server, so if… Read More WordPress.org: Pretty Permalinks
Using NSNotificationCenter is a great way to send messages such that its corresponding receivers will be able to update their variables or interface values. First, create a name for your notification in your Constants file (go here if you don’t know how to create one), or anywhere appropriate so that your receiver(s) and sender will… Read More iOS: Using NSNotificationCenter to Send/Receive Messages
To round off a number in different ways:
Use the arc4random function to generate random numbers in a range. Suppose you have to generate a random number from 0 to 99. Do: int randomNum0to99 = arc4random() % 100; Or: int randomNum0to99 = arc4random_uniform(100); Between the 2 codes, the latter is preferred because: arc4random_uniform() will return a uniformly distributed random number less than upper_bound.… Read More iOS: Random Number Generation