Locking all connections before editing the Nib files can be achieved
by using:

Which debugging tasks are provided by Xcode to find and squash bugs in your code?

In a Cocoa framework, how do the UIKit classes UIControl, UITextField, UIButton, and UITableView deliver their services?

What is the default value of the fontSize property of the CATextLayer class?

Which copy functions will you use in Objective-C to create an entirely new compound object?

Which one is the best resolution for the following error? 'A valid signing identity matching this profile could not be found in your keychain'

Which method of Objective-C handles detecting the shake gesture on an iOS device?

What property in info.plist handles the association of file types in an iPhone application?

Which framework can be used to call SOAP web services in iOS applications?

Is it possible to set multiple architecture from Build Settings tab in Xcode for a project?