Local and External Parameter Names
In Swift, functions can describe their variables’ local and global declarations. For functions and methods, the characteristics of local and global parameter name declarations vary. For convenience, the first parameter in Swift is referred to by the prepositions “with,” “for,” and “by.”
Declaring the names of the first and subsequent parameters as global parameters is now possible in Swift. By declaring the first parameter name to be a local parameter name and the remaining parameter names to be global parameter names, Swift offers flexibility in methods. In this case, Swift methods declare “no1” as a local parameter name. Throughout the programme, global declarations are made using the variable “no2.”
Swift
class division { var count : Int = 0 func incrementBy(no1: Int , no2: Int ) { count = no1 / no2 print ( count ) } } let counter = division() counter.incrementBy(no1: 120, no2: 2) counter.incrementBy(no1: 220, no2: 4) counter.incrementBy(no1: 486, no2: 6) |
Output:
Swift – Methods
Methods are functions that belong to a specific type. Instance methods, which encapsulate particular tasks and functionality for working with an instance of a given type, can be defined by classes, structures, and enumerations. Type methods, which are connected to the type itself, can also be defined by classes, structures, and enumerations. In Objective-C, type methods are comparable to class methods.
Swift differs significantly from C and Objective-C in that structures and enumerations can define methods, whereas classes are the only types in Objective-C that can. In Swift, you can define a class, structure, or enumeration and still define methods on the type you create.