Join Scott Gardner for an in-depth discussion in this video Use ranges with strings, part of Swift 3 Essential Training: Beyond the Basics.
- [Instructor] I'll continue in the same exercise file…from the previous video.…I want to replace a portion of the quote string I defined…from the W in the word we through to the end of the string.…So first I'll define a start index…using the index offset by method,…passing the quote.startIndex and an offset of 12,…which offsets to the index of the W.…Next I'll create a range using the range initializer…that takes an unchecked balance parameter…that is a topple of the lower and upper bound indexes.…
This initializer returns a half open range…that is it excludes the upper bound index.…I'll print the subrange of the quote string,…using the range value just…to verify I have the subrange I want.…That's one way to create a range,…although I find the syntax a bit odd…because it takes a topple with two values…instead of just taking two parameters directly.…There's an easier way to create a range.…I'll define rangeToReplace…using the half open range operator.…Range to replace is equal…to the range value I created above.…
- 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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