What type of return does the function area give in Swift?

What type of return does the function area give in Swift?

function returns an actual tuple value or nil : if let bounds = minMax(array: [8, -6, 2, 109, 3, 71]) { print(“min is \(bounds. min) and max is \(bounds.

How does a function return a value in Swift?

If you want to return your own value from a function, you need to do two things:

  1. Write an arrow then a data type before your function’s opening brace, which tells Swift what kind of data will get sent back.
  2. Use the return keyword to send back your data.

What would be the return type of a function if the return type is not defined in Swift?

Any function that does not return a value has a special return type named Void . When we do not specify a function return type, we have simply told swift that the return type is a void hence our function must not return anything.

How do you define a function in Swift?

In Swift 4, a function is defined by the “func” keyword. When a function is newly defined, it may take one or several values as input ‘parameters’ to the function and it will process the functions in the main body and pass back the values to the functions as output ‘return types’.

What is a type Swift?

In Swift, there are two kinds of types: named types and compound types. A named type is a type that can be given a particular name when it’s defined. Named types include classes, structures, enumerations, and protocols. A compound type is a type without a name, defined in the Swift language itself.

How do you return in Swift?

As well as receiving data, functions can also send back data. To do this, write a dash then a right angle bracket after your function’s parameter list, then tell Swift what kind of data will be returned. Inside your function, you use the return keyword to send a value back if you have one.

What does a return value do?

Generally, a return value is used where the function is an intermediate step in a calculation of some kind. You want to get to a final result, which involves some values that need to be calculated by a function.

What is Inout in Swift?

Swift inout parameter is a parameter that can be changed inside the function where it’s passed into. To accept inout parameters, use the inout keyword in front of an argument. To pass a variable as an inout parameter, use the & operator in front of the parameter.

How do you return a function in Swift?

How many types of functions are there in Swift?

Swift has two compound Types: functions and tuples. Now I know what you might be thinking: “Functions have names!” Indeed many do. But when we’re thinking about them in terms of their Type-ness, we’ve got to go beyond the name to the function’s “signature” characteristics.

What are the types of type?

data type

Data Type Used for Example
Integer Whole numbers 7, 12, 999
Float (floating point) Number with a decimal point 3.15, 9.06, 00.13
Character Encoding text numerically 97 (in ASCII, 97 is a lower case ‘a’)
Boolean Representing logical values TRUE, FALSE

What is class type in Swift?

Type classes, also known as extension interfaces, are usually represented in Swift as protocols with associated types and/or Self requirements. They are groups of functions that operate on generic type parameters and are governed by algebraic laws.