is there a shorter way to declare a function in swift? in swift

Yes, there is a shorter way to declare a function in Swift using the shorthand syntax. Instead of explicitly stating the func keyword, you can directly define the function using the following syntax:

main.swift
// Long form
func sayHello(name: String) {
    print("Hello, \(name)!")
}

// Shorthand form
var sayHello: (String) -> () = { name in
    print("Hello, \(name)!")
}
165 chars
10 lines

In the shorthand form, we define a variable sayHello as a closure that takes a String parameter and returns nothing (()). Inside the closure, we print the greeting message.

To call the shorthand function, simply use the variable name followed by the parameter value:

main.swift
sayHello("John") // Output: Hello, John!
41 chars
2 lines

Note that the shorthand form can be particularly useful when you want to assign the function to a variable or pass it as an argument to another function.

I hope this helps! Let me know if you have any more questions.