# Swift - Data Type Using Tuples

## Introduction

A tuple is an ordered collection of values.

The values inside a tuple can be of any type.

They need not be all of the same type.

To store the coordinates of a point in the coordinate space:

```var x = 7
var y = 8
```

This used two variables to store the x and y coordinates of a point.

You can store them together as a tuple instead of two individual integer variables:

```var pt =  (7,8)
```

Here, pt is a tuple containing two values: 7 and 8. You can rewrite the tuple as follows:

## Demo

```var pt:  (Int, Int)
pt =  (7,8)
print(pt)
```

## Result

Here, it is obvious that the pt is a tuple of type (Int, Int).

Here are some more examples of tuples:

## Demo

```var flight = (1001, "New York", "Seattle")
print(flight);/*from ww  w  .j a v  a 2 s . co  m*/

var phone =  ("Jason", "001-222-3333")
print(phone)
```

## Result

To retrieve the individual values inside a tuple, you can assign it to individual variables or constants:

## Demo

```var flight = (1001, "New York", "Seattle")
let (flightno, orig, dest) = flight
print(flightno)  //from  w w w .j  a v  a2 s  .co m
print(orig)
print(dest)
```

## Result

If you are not interested in some values within the tuple, use the underscore _ character in place of variables or constants:

## Demo

```var flight = (1001, "New York", "Seattle")
let (flightno,  _ ,  _ ) = flight
print(flightno)
```

## Result

Alternatively, you can access the individual values inside the tuple using the index, starting from 0:

## Demo

```var flight = (1001, "New York", "Seattle")
let (flightno,  _ ,  _ ) = flight
print(flight.0)  //7031
print(flight.1)  //ATL
print(flight.2)  //ORD
```

## Result

Using the index to access the individual values inside a tuple is not intuitive.

A better way is to name the individual elements inside the tuple:

```var flight = ( flightno :1001,  orig :"A",  dest :"B")

print(flight.flightno)
print(flight.orig)
print(flight.dest)
```

Once the individual elements are named, you can access them using those names: