Straying From the Happy Path: Taking Control of Errors in Swift
summary
Survey of Swift error handling that names concrete techniques: use of throws and Result for sync and async, dataTaskPublisher and catch to emit placeholder for Combine, and XCTest assertions to verify failure cases. Shows a reusable pattern to replace fatalError with test closure so crashing paths are exercised and asserted, enabling the claim of 100% test coverage for even “impossible” branches. Includes a table‑view dequeue example and working test harness that makes coverage and behavior observable.
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chapters (20)
- 0:00Intro
- 0:15Straying From the Happy Path Taking Control of Errors in Swift
- 2:26Error Handling in Objective-C
- 4:39Errors in Swift Result
- 5:08Result in Practice
- 6:48Result in Actual Practice
- 7:46Objective-C Error Handling in Practice
- 9:49The Swift Error Type
- 11:59Advanced throws
- 12:54The Error Type
- 13:07Effective Swift Errors Logging
- 15:01Testing Result
- 17:50Testing throws
- 18:36Testing fatalError()
- 21:38When to Use fatalError()
- 22:38Swift Assertion Methods
- 28:01Combine Operators
- 28:47Combine Publishers The Never Type
- 29:36SwiftUl and Errors
- 33:02Questions?
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