What is IndexedDB in HTML5 ?
IndexedDB provides a way for you to store large amounts of data on your user’s browser. Any application that needs to send a lot of data over the wire could greatly benefit from being able to store that data on the client instead. Of course storage is…
iphone Interview Questions part-13
141-Helper Objects Helper Objects are used throughout Cocoa and CocoaTouch, and usually take the form of a delegate or dataSource. They are commonly used to add functionality to an existing class without having to subclass it. 142-Cluster Class Class…
iphone Interview Questions part-4
31-What is notification in iOS? The notification mechanism of Cocoa implements one-to-many broadcast of messages based on the Observer pattern. Objects in a program add themselves or other objects to a list of observers of one or more notifications, each…
iphone Interview Questions part-1
1-How would you create your own custom view? By Subclassing the UIView class. 2-Whats fast enumeration? Fast enumeration is a language feature that allows you to enumerate over the contents of a collection. (Your code will also run faster because the…