01
Showing a relative "Time ago" date in SwiftUI
SwiftUIDateFormattingFoundation
Learn how to display human-readable relative timestamps like "5 minutes ago" or "yesterday" using RelativeDateTimeFormatter in your SwiftUI apps.
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> Foundation
// 4 articles available
- 02
Key-Value Observing Deep Dive
Objective-CFoundationAdvancedKVO lets you observe property changes without delegation or notifications. Here's how it works under the hood and how to use it correctly.
READ_ARTICLE - 03
The NSObject Class Hierarchy Explained
Objective-CFoundationFundamentalsEvery Objective-C class inherits from NSObject (usually). Here's what NSObject provides and why it matters for every object you create.
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Class Clusters in Objective-C - The Pattern Behind Foundation
Objective-CDesign-PatternsFoundationUnderstand the class cluster pattern that makes NSString, NSArray, and NSDictionary work, and learn how to implement your own.
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