16 lines
235 B
TypeScript
16 lines
235 B
TypeScript
interface IOption<A> {
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get(): A;
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flatten<B>(): IOption<B>;
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}
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class None<T> implements IOption<T>{
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get(): T {
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throw null;
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}
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flatten<U>() : IOption<U> {
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return new None<U>();
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}
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}
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