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I have the following typing : declare function linkedSignal<S, D>(options: { source: () => S; computation: (source: NoInfer<S>, previous?: {source: NoInfer<S>; value: NoInfer<D>}) => D; }): D; When using it this way : linkedSignal({ source: () => 3, computation: (source, previous) => { return 3; }, }) D is infered as unknown, even though the […]
Combining Swift’s flexible generics system with protocol-oriented programming can often lead to some really powerful implementations, all while minimizing code duplication and enabling us to establish clearly defined levels of abstraction across our code bases. However, when writing that sort of code before Swift 5.7, it’s been very common to run into the following compiler […]
Combining Swift’s powerful generics system with the fact that any Swift type can be extended with new APIs and capabilities enables us to write targeted extensions that conditionally add new features to a type or protocol when it fits certain requirements. It all starts with the where keyword, which lets us apply generic type constraints […]