IOS Software Developer Interview Questions and Answers

Higher order functions in Swift are functions that can take other functions as parameters or return functions as results.

• Higher order functions include map, filter, and reduce in Swift.

• They allow for more concise and readable code by abstracting common patterns of code.

• Example: map function can be used to transform each element in an array without using a loop.

Design a login SDK for an app handling all edge cases

• Implement secure password hashing and encryption

• Handle network errors and timeouts gracefully

• Include multi-factor authentication options

• Support various authentication methods like biometrics

• Handle account lockouts and password resets

Static dispatch is determined at compile time, while dynamic dispatch is determined at runtime.

• Static dispatch is also known as early binding, while dynamic dispatch is also known as late binding.

• Static dispatch is faster as the method to be called is known at compile time, while dynamic dispatch incurs a slight performance overhead as the method to be called is determined at runtime.

• In static dispatch, the method to be called is resolved based on the type of the variable at ...read more

TableView is a UI component in iOS that displays data in a scrollable list format.

• TableView is used to display data in rows and sections.

• It is commonly used to present lists of items, such as contacts, messages, or products.

• Each row in a TableView is represented by a UITableViewCell.

• Data for a TableView is typically provided by implementing the UITableViewDataSource protocol.

• TableView can be customized by modifying the appearance of cells, headers, and footers.