Swift Learning: Construction process

A construction process is a preparation process that precedes an instance of a class, struct, or enumeration type. You must perform this procedure before a new instance is available, including setting the initial value of each stored-type property in the instance and performing other necessary settings or initialization work.

The constructors are defined to implement the construction process, which can be seen as a special method for creating a new instance of a particular type. Unlike constructors in OC, Swift's constructors do not need to return a value, their primary task is to ensure that the new instance completes the correct initialization before the first use.

Instances of a class can also perform specific cleanup work before the instance is freed by defining the destructor.

Swift Learning: Construction process