弥补Java的foreach不能获取index的不足:
import java.util.Objects;
import java.util.function.BiConsumer;
public class IterableUtils {
public static <T> void forEach(Integer startIndex,
Iterable<? extends T> elements,
BiConsumer<Integer, ? super T> action
) {
Objects.requireNonNull(elements);
Objects.requireNonNull(action);
for (T element : elements) {
action.accept(startIndex++, element);
}
}
}
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调用:
IterableUtils.forEach(0, list, (index, value) -> {
//TODO
});
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转载于:https://juejin.im/post/5cff0cbbf265da1b6836b2d2