You can store a UIImage (or an NSImage on Mac) as raw data. This can be useful if you’d like to save this in Core Data. Here’s how you convert a UIImage into NSData: NSData *imageData = UIImagePNGRepresentation(yourImage); To convert NSData back to a UIImage, you can do this: UIImage *image = [[UIImage alloc]initWithData:yourData]; The […]
Core Data is great. But when you add it to an existing project Xcode throws some random error messages at you that make you doubt your sanity. Again. Legitimately copied and pasted code from Apple’s own templates generates totally useless errors such as Receiver type ‘NSManagedObjectContext’ for instance message is a forward declaration. This isn’t […]
Apple’s new A7 processors support 64bit under iOS 7 – but only if your app is specifically compiled for 64bit. Ideally you want to compile once and use 64bit if the architecture supports, and if not use 32bit for devices that have A4 – A6x processors. Since Xcode 5.0.2 you can do this, and here’s […]
Xcode 5 has more than a few annoying habits. One of them is that the status bar disappears when you run your app under iOS 6, if the option “Hide Status Bar during launch” is checked. On iOS 7 it correctly hides the status bar during launch, but under iOS 6 it’s gone for good. […]
Parallels Plesk Documentation
file_get_contents() can help us here. It reads a file and stores it in a string. Can be used with local files, as well as online content: $myLocalFile = file_get_contents(‘myfile.html’); $myOnlineFile = file_get_contents(‘http://wpguru.co.uk’); echo myOnline File; // would display the actual website This is different from the file() function which reads the contents of a file … Read more
If we have a string and would like to replace a portion of it, we can use the str_replace() function in PHP. It works like this: str_replace (‘whatToReplace’, ‘theReplacement’, ‘originalText’); It’s easy to remember… but I always get confused when I look this up in the manual. Here’s an example: $originalText = “Now is the … Read more
A UNIX timestamp is something like a 10 digit (or less) integer number which represents the elapsed seconds since the 1st of January 1970 (also known as the Unix Epoch). It’s a very accurate representation of time, but not necessarily something us humans easily understand. A Unix Timestamp looks something like 1367805780. We can use … Read more
