Join Scott Gardner for an in-depth discussion in this video Add source files, part of Swift 3 Essential Training: Beyond the Basics.
- [Instructor] I briefly touched upon…using the Sources folder in a Playground…in the Basics course.…Moving code out of the main Playground page…and into a separate file in Sources…can help keep your Playground code focused and uncluttered.…Think separation of concerns here.…Additionally though, code in the Sources folder…only needs to be compiled once,…not every time you make a change in the Playground.…I've defined a function that spells out a numeric literal,…or a string containing a numeric literal.…I'll use it to print out a numeric literal.…I'm force unwrapping the optional result,…because I know it will succeed.…
With this just being a few lines of code,…the delay is subtle, but notice that there is…a slight delay in executing this print statement,…every time I press the Execute Playground button.…This is because the spellOut number function…is recompiled every time, and that code…does kind of overshadow the actual…line of code I want to focus on.…So, I'll cut this code out of the main Playground page.…
- Adding source files, resources, links, and literals
- Adding pages to a playground
- Using overflow operators and bitwise operators
- Using ranges with strings
- Creating complex sequences
- Chaining higher-order functions
- Defining lazy properties
- Using failable initializers
- Mutating methods
- Working with singletons
- Nesting function types
- Creating error types and recursive enumerations
- Extending concrete types
- Referencing selectors and key paths
- Working with protocol-oriented programming
- Defining class-only protocols and optional protocols
- Using option sets, type checking, and casting operators
Skill Level Intermediate
Core Data for iOS and macOS Enterprise Developerswith Jon Bott1h 46m Intermediate
Distributing Your iOS App for Testing with TestFlightwith Ron Buencamino35m 10s Intermediate
iOS App Development: Test-Driven Developmentwith Harrison Ferrone2h 14m Intermediate
3. Strings and Characters
4. Sequences and Collections
5. Control Flow
6. Value and Reference Types
9. Access Control
Understand access control3m 47s
Next steps1m 2s
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