Programming in Swift

Learn about Apple’s open source programming language, Swift, through hands-on examples! This series is up-to-date for Swift 4 and uses Xcode 9. By Ray Wenderlich.

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Part 1: Part 1: Core Concepts

1
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Let's review what you'll be learning in this section, and why it's important.

2
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Learn how to create your first Swift playground, and see how useful it can be to learn Swift, and use in day-to-day development.

3
Comments 1:38
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Learn the various ways to add comments to your Swift code - a useful way to document your work or add notes for future reference.

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Tuples 5:23
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Learn the group related data together into a single unit, through the power of a Swift type called Tuples.

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Practice using tuples on your own, through a hands-on challenge.

Booleans 7:44
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Learn how to use a Swift type called Booleans, which represent true or false values.

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Practice using booleans on your own, through a hands-on challenge.

Scope 3:16
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Learn what the concept of scope means in Swift, and how it applies to if statements.

Conclusion 0:48
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Let's review where you are with your Swift core concepts, and discuss what's next.

Part 2: Part 2: Flow Control

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Let's review what you'll be learning in this section, and why it's important.

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Learn how to make Swift repeat your code multiple times with while loops, repeat while loops, and break statements.

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Practice using while loops on your own, through a hands-on challenge.

For Loops 7:30
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Learn how to use for loops in Swift, along with ranges, continue, and labeled statements.

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Practice using for loops on your own, through a hands-on challenge.

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Learn how to use switch statements in Swift, including some of its more powerful features.

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Practice using switch statements on your own, through a hands-on challenge.

Conclusion 0:55
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Let's review what you learned in this section, and discuss what's next.

Part 3: Part 3: Functions and Optionals

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Let's review what you'll be learning in this section, and why it's important.

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Learn how to write your own functions in Swift, and see for yourself how Swift makes them easy to use.

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Practice writing functions on your own, through a hands-on challenge.

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Learn some more advanced features of functions, such as overloading, inout parameters, and functions as variables.

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Learn about one of the most important aspects of Swift development - optionals - through a fun analogy.

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Practice using optionals on your own, through a hands-on challenge.

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Learn how to unwrap optionals, force unwrap optionals, use optional binding, and use the guard statement.

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Practice working with optionals on your own, through a hands-on challenge.

Conclusion 0:42
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Let's review where you are with your Swift core concepts, and discuss what's next.

Part 4: Part 4: Collections

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Let's review what you'll be learning in this section, and why it's important.

Arrays 13:29
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Learn how to use arrays in Swift to store an ordered list of values.

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Practice using arrays on your own, through a hands-on challenge.

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Learn how to use dictionaries in Swift to store an unordered collection of pairs.

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Practice using dictionaries on your own, through a hands-on challenge.

Sets 2:20
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Learn how to use Sets in Swift to store an unordered collection of unique values.

Closures 10:34
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Learn how to create closures in Swift - which you can think of as a method without a name.

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Learn how you can use closures to sort collections, filter collections, run calculations on elements within a collection, and more.

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Practice using closures on your own, through a hands-on challenge.

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Learn which collection you should use in a given situation.

Strings 15:03
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Learn how a string works in Swift, along with some useful things you can do with strings - and why strings are collections too.

Conclusion 0:36
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Let's review what you learned in this section, and discuss what's next.

Part 5: Part 5: Structures

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Let's review what you'll be learning in this section, and why it's important.

Structures 13:20
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Learn how to group data and functionality together in Swift, using a value type called structures.

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Practice using structures on your own, through a hands-on challenge.

Protocols 5:40
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Learn how to make your types conform to protocols in Swift, which you can think of as a to-do list for your types.

Properties 14:14
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Learn how to add two types of properties to your types: stored properties, and computed properties.

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Practice creating properties on your own, through a hands-on challenge.

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Learn when it's best to use computed properties, and when it's best to use methods.

Methods 10:38
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Take a deep dive into methods, including writing initializers, mutating methods, extensions, and more.

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Practice writing methods on your own, through a hands-on challenge.

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Let's review what you learned in this section, and discuss what's next.

Part 6: Part 6: Classes

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Let's review what you'll be learning in this section, and why it's important.

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Learn about the differences between classes and structures in Swift, and when you should use which.

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Practice working with classes and understanding when to use them vs. structures, through a hands-on challenge.

Inheritance 15:25
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Learn how you can inherit functionality from another class in Swift.

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Learn how to create your own class initializers, including two-phase initializatoin, and required vs. convenience initializers.

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Practice creating your own class initializers, through a hands-on challenge.

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Learn when you should subclass, and when you shouldn't.

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Learn how Swift manages memory under the hood, how you can tell when an object is deinitialized, and how you can avoid a nasty memory leak in your apps.

Conclusion 0:52
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Let's review where you're at with your Swift core concepts, and discuss what's next.