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deepak sharma
3,844 Pointsin this video two function with same???
this is first funcion
func pay() -> PayCheck { return PayCheck(base: 0, benefits: 0, deductions: 0, vacation: 0) }
and this is second function??? func pay(employee: Employee) {
}
this is very confusing...how this is possible two func with same name?
2 Answers
andren
28,558 PointsIt's called function/method overloading and it is possible because they have different parameters defined. When you call a function Swift does not just look at the name of the function, but also at what arguments you are providing to it. Both the name and the arguments have to match for a function to be called.
So the first pay function defined in your example could only be called like this:
Pay() // Pay call with no arguments
While the second function would have to look something like this:
Pay(employee: someEmployee) // Pay with one argument which is called employee
Since it's possible to distinguish which function each call is intended for it's not a problem that multiple functions share the same name. This is actually a pretty common practice, not just in Swift but in many other Object Oriented Languages like Java, C++ and C#
deepak sharma
3,844 Pointsthanks andren, for explaining so nice...
Christopher Debove
Courses Plus Student 18,373 PointsIt was already thoroughly explained in the chapter on Enumerations (examples with Day and DayType enums)