What is the use of “static” keyword if “let” keyword used to define constants/immutables in swift?

Question

I\'m little bit confused about using static keyword in swift. As we know swift introduces let keyword to declare immutable objects. Like de

Answer 1

"The let keyword defines a constant" is confusing for beginners who are coming from C# background (like me). In C# terms, you can think of "let" as "readonly" variable.

(answer to How exactly does the “let” keyword work in Swift?)

Use both static and let to define constant

public static let pi = 3.1416            // swift

public const double pi = 3.1416;         // C#
public static final double pi = 3.1416   // Java     

Whenever I use let to define constant, it feels like I am using readonly of C#. So, I use both static and let to define constant in swift.