# Programming in Swift: Functions & Types

Jan 4 2022 Swift 5.5, iOS 15, Xcode 13

## Part 1: Functions

### Lesson Complete

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Update Notes: This course was originally recorded in 2019. It has been reviewed and all content and materials updated as of October 2021.

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Are you ready for your next challenge? You’ll find it on page 4 of the Playground for this part of the course. Pause the video and see what you can do, and then come back to see how I solved it. Have fun!

``````func multiply(😺_ number: Int, 😺_ multiplier: Int) -> Int {...
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``````func multiply(number: 😺Double, multiplier: 😺Double) -> 😺Double {...
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``````func printMultipleOf(multiplier: Int, number: Int😺 = 1🛑) {...
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``````func update(score: 😺inout🛑 Int, withPoints points: Int) {
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``````update(score: 😺&🛑score, withPoints: 100)
``````
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