Ole Begemann • 4/19/2022

A heterogeneous dictionary with strong types in Swift

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This technical article explains how to implement a HeterogeneousDictionary in Swift, a custom data structure that stores mixed key-value pairs with strong typing, akin to SwiftUI's environment. It details the API, usage with a text formatting example, and the concepts of using types as keys and domains (keyspaces) for type safety without casting.

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#type safety #Swift #Swiftui
A heterogeneous dictionary with strong types in Swift

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