permits implementieren und default entfernen #346

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pl · 2024-09-04T12:31:12Z

pl commented

2024-09-04 12:31:12 +00:00

Bsp.:
sealed interface List permits LinkedElem, Elem {}

public record LinkedElem(T a, List l) implements List {}
public record Elem(T a) implements List {}

public class SwitchAppend {
public append(l1, l2) {
return switch(l1) {
case LinkedElem(a, Elem(e)) -> new LinkedElem<>(a, new LinkedElem<>(e, l2));
case LinkedElem(a, r) -> new LinkedElem<>(a, append(r, l2));
**//**default -> null;
};
}
}

Bsp.: sealed interface List<T> **permits LinkedElem, Elem {}** public record LinkedElem<T>(T a, List<T> l) implements List<T> {} public record Elem<T>(T a) implements List<T> {} public class SwitchAppend { public append(l1, l2) { return switch(l1) { case LinkedElem(a, Elem(e)) -> new LinkedElem<>(a, new LinkedElem<>(e, l2)); case LinkedElem(a, r) -> new LinkedElem<>(a, append(r, l2)); **//**default -> null; }; } }

dholle was assigned by pl

2024-09-04 12:31:12 +00:00

RubenKraft was assigned by pl

2024-09-04 12:31:12 +00:00

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