Constructs in Objective C and Swift

Classes, Structs and Enums are called Constructs and all three of them allow your program to store, organize or manipulate data in different ways with different capabilities.

Classes

• General Purpose, flexible construct that becomes the building blocks of your program code.
• Have properties and methods that provide data storage and functionality to constructs
• Can use inheritance
• Can use initializers and de-initializers when setup or tear down when they are created or destroyed.

Structs

• Structs in Swift can have Properties and Methods (Swift Only)
• Can use initializers (Swift Only)
• No Inheritance
• Passed by copy ( this can be advantage/disadvantage based on the needs)

Enums:

• Way to group related elements
• Can include functions (Swift only)
• Can use initializers (Swift only)