Join Scott Gardner for an in-depth discussion in this video Use option sets, part of Swift 3 Essential Training: Beyond the Basics.
- [Instructor] A common need in working with coco…and coco touch APIs is to pass one or more options…as a single input parameter.…And prior to Swift the way you would do this in objective C…is to create an enumeration and use bit y shifting…for each case's raw value.…But raw values and swift enumerations…must be numeric literals.…So you could manually do the math…and enter literal values here instead.…
However to make working with option sets easier,…swift includes the option set protocol…which was renamed from option set type in Swift 3.…I'll define a struct options…that adopts the option set protocol.…Notice that I'm using a plural name…which improves readability.…Option set requires a raw value property of an integer type.…This documentation is certainly thorough if a bit dense.…So let me just walk through a conforming to option set.…
First, I'll define a raw value property of type int.…Next, I'll define static constant properties…for each type I want to make available.…Bit y shifting can be used in a parameter assignment…
- 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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