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KOBA789/inference.ts

Created June 27, 2017 14:08
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inference.ts
function dig<T, K extends keyof T>(obj: T, key: K): T[K] {
return obj[key];
}
const s: string = dig({ a: 'hoge', b: 1 }, 'a');
const t: number = dig({ a: 'hoge', b: 1 }, 'b');
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