Swift version: 5.6
Some folks use “function” and “method” interchangeably, but there’s a small difference: both of them are reusable chunks of code, but methods belong to classes, structs, and enums, whereas functions do not.
So:
func thisIsAFunction() {
}
struct Person {
func thisIsAMethod() {
}
}
Because methods always belong to a data type, they have a concept of self
that functions do not. This is a special value passed in by Swift, and it refers to whatever instance the method was called on.
Swift uses the same keyword, func
, for both functions and methods.
SPONSORED AppSweep by Guardsquare helps developers automate the mobile app security testing process with fast, free scans. By using AppSweep’s actionable recommendations, developers can improve the security posture of their apps in accordance with security standards like OWASP.
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 9.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.