Swift 2.0 Study Notes (day 36)--static method

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Static methods are similar to static properties, and a static method , also known as a type method , is defined in Swift. Static methods are defined in the same way as static properties, where the keyword used by the enumeration and static methods of the struct is static, the keyword used by the class static method is class or static, and if the static definition is used, the method cannot be overridden in a subclass (override) If you use the class definition, the method can be overridden by the quilt class.

static method of structure body

Look at an example of a struct static method, with the following code:

structAccount {varOwner:string ="Tony"                //declaring instance attribute account name    Static varInterestrate:double =0.0668  //declaring a static property interest rate    StaticFunc Interestby (amount:double), Double {//Defining static Methods        returnInterestRate *Amount} func messagewith (amount:double)-String {//Defining instance MethodsLet interest=Account.interestby (amount)return "\ (self.owner) interest is \ (interest)"           }} //calling a static methodPrint (Account.interestby (10_000.xx)) varMyAccount =Account ()//Invoking instance methodsPrint (Myaccount.messagewith (10_000.xx))

Enumerate static methods

Look at an example of an enumeration of static methods, with the following code:

enumAccount { CaseBank of China CaseICBC CaseChina Construction Bank CaseAgricultural BankStatic varInterestrate:double =0.0668   //declaring a static property interest rate    StaticFunc Interestby (amount:double), Double {//Defining static Methods        returnInterestRate *Amount}} //calling a static methodPrint (Account.interestby (10_000.xx))//calling a static method

As can be seen from the example, there is no difference in the use of static methods for structs and enumerations.

Class static methods

Look at an example of a class static method with the following code:

classAccount {varOwner:string ="Tony"                 //Account name//can be replaced by static    classFunc Interestby (amount:double), Double {//define a static method using the keyword class        return 0.08886*Amount}} //calling a static methodPrint (Account.interestby (10_000.xx))//calling a static method

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Swift 2.0 Study Notes (day 36)--static method