Function declarations in Swift.swift

// The difference between declaring a method in a class, a function
// outside of a class, and an init method.


func foo(#a: String, #b:String) -> String {
    return a + " " + b
}
foo(a:"Hello", b:"dude")

func foo1(a: String, b: String) -> String {
    return a + " " + b
}
foo1("Hello", "dude1")

class FooClass {
    let one, two : String
    
    init(one: String, two: String) {
        self.one = one
        self.two = two
    }
    
    init(one: String, and two: String) {
        self.one = one
        self.two = two
    }
    
    func foo(#a: String, b: String) -> String {
        return a + " " + b
    }
    
    func foo1(a: String, b: String) -> String {
        return a + " " + b
    }
    
    func foo2(a: String, _ b: String) -> String {
        return a + " " + b
    }
    
    func description() -> String {
        return one + " " + two
    }
}

var fooObj = FooClass(one: "Yo", two: "world")
fooObj.foo(a: "Hello", b: "world")
fooObj.foo1("Test", b: "man")
fooObj.foo2("I", "am")
fooObj.description()
var fooObj1 = FooClass(one: "Wow", and: "cool")
fooObj1.description()