To be! Or not? Optionals in practice
summary
Practical rules for Swift optionals: prefer non-optional values and use empty collections/strings instead of nil, because most fields aren’t truly optional; treat optional Bool as three-state configuration only when needed; prefer letting UI code convert UITextField.text once rather than spreading optionals; use an explicit Result type (success or error) instead of data+error pairs; force-unwrap only with deliberate intent (crash in dev, recover in release); keep implicitly unwrapped optionals rare (IBOutlets, certain delegate patterns) and unwrap early to reduce scattered checks.
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chapters (9)
- 0:00Intro
- 0:56Whats an optional
- 6:50Collections
- 8:22Defaults
- 15:15ForceUnwrap
- 20:16Implicit Unwrapping
- 31:53Optional ints
- 35:49Summary
- 36:52Questions
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