Created
June 21, 2021 03:18
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A comprehensive 5-line introduction to generics
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| const wrapP = <T>( x: T ) : Promise<T> => Promise.resolve(x); | |
| const wrapL = <T>( x: T ) : T[] => [x]; | |
| const foo = wrapP("string"); // Promise<string> | |
| const bar = wrapL(5); // number[] | |
| // PS: you can also add constraints |
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