John Sundell • 4/14/2022

Type placeholders in Swift

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This article details the introduction of type placeholders in Swift 5.6, a language feature that enhances type inference for generic types. It demonstrates how the underscore (_) placeholder can reduce verbosity, especially with complex generics like Combine's CurrentValueSubject or custom Resource types, making code cleaner while maintaining type safety.

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#type inference #generics #Swift
Type placeholders in Swift

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