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In this Switched Xcode tutorial, Cal demonstrates how to validate a form by validating text fields specifically for email, password, and phone number inputs. For email validation, the correct syntax must include strings, symbols, and a full stop. Password validation requires a minimum length, at least one uppercase and lowercase character, and a digit. Phone number validation ensures all digits and correct length. The tutorial guides viewers through creating a new Swift project in Xcode for iOS app development.
