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I would like to return two objects from a method using swift.
How can this method be added to an existing objective c class to access the tuple from where ever the method is called, in non swift files?
Does the tuple need to be created in a swift class?
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In Swift, Tuple is a Compound Type that holds some properties together which are built up from Objects of Swift Named Types for example class, struct and enum.
Swift's functions have a single return type, such as Int or String , but that doesn't mean we can only return a single value. In fact, there are two ways we can send back multiple pieces of data: Using a tuple, such as (name: String, age: Int) Using some sort of collection, such as an array or a dictionary.
In Swift, a tuple is a group of different values. And, each value inside a tuple can be of different data types. Suppose we need to store information about the name and price of a product, we can create a tuple with a value to store name (string) and another value to store price (float)
In Swift a tuple can consist of multiple different types. Tuples are ordered and elements of tuples can also be named. So we can access elements of a tuple both by position and name, and we can deconstruct data into a tuple using the assignment operator.
Tuple is not compatible in objective c.You can use Dictionary instead of tuple .From swift documentation.
You’ll have access to anything within a class or protocol that’s marked with the @objc attribute as long as it’s compatible with Objective-C. This excludes Swift-only features such as those listed here:
Generics Tuple //Tuple cannot be acesses from objective c Enumerations defined in Swift Structures defined in Swift Top-level functions defined in Swift Global variables defined in Swift Typealiases defined in Swift Swift-style variadics Nested types Curried functionsFor example, a method that takes a generic type as an argument or returns a tuple will not be usable from Objective-C.
You cannot use these types in objective c in which tuple is included and cannot be accessed and it is not bind with any type in objective c and not compatible with objective c.
However you can do each and every thing with Swift Dictionaries that you can do with tuple.Use Dictionary instead of tuple.
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