Swift Fundamentals: Part IV: (in-depth functions and closures)

Interview questions: (1) What kind of projects you have done before, and how to talk about your project from an architectural perspective.

(2) What do you think of the different versions of iOS, and how do you deal with version issues during the project?

(3) How you optimize the performance of iOS.

(4) What test tools will you use to test your project (memory management, interface testing) in the course of your project?

(5) The location of your domicile, where you live, why you are living in the development, university major. (similar to the survey account, right).

Although, have not been exposed to such problems before, but in the actual development, we really have encountered these problems, but you do not even notice, these problems are a developer from the programmer to become architects, must know some common sense, well, I will continue to refuel. All right, let's add to the function of section two today.

1. Functions are just a few.

(0) Basic form of function:

Func function name (parameter: parameter type), return value {function Body}

(1) No return included:

(NULL)

(2) Return with participation:

Func halfofsum (Num1:int, Num2:int)->int

{

Return (NUM1+NUM2)/2

}

Halfofsum (20,num2:30)

(3) No participation returns:

(4) No participation, no return:

(5) There are several returns:

Func studentinfo (name:string, age:string, Sex:string, addrress:string) (name:string, age:string, sex:String, addrress:string)

{

Return (name,age,sex,address)

}

Studentinfo ("Zhangsan", Age: "A", Sex: "Male", addrress: "Guangdong Shenzhen")

(6) Non-participating returns:

Swift Fundamentals: Part IV: (in-depth functions and closures)