/**
 * Copyright (c) 2025-2026, Michael Yang 杨福海 (fuhai999@gmail.com).
 * <p>
 * Licensed under the GNU Lesser General Public License (LGPL) ,Version 3.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.gnu.org/licenses/lgpl-3.0.txt
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.easyagents.flow.core.util;

import java.util.Collection;
import java.util.List;

public class CollectionUtil {

    private CollectionUtil() {
    }


    public static <T> boolean noItems(Collection<?> collection) {
        return collection == null || collection.isEmpty();
    }


    public static boolean hasItems(Collection<?> collection) {
        return !noItems(collection);
    }

    public static <T> T firstItem(List<T> list) {
        if (list == null || list.isEmpty()) {
            return null;
        }
        return list.get(0);
    }
    

    public static <T> T lastItem(List<T> list) {
        if (list == null || list.isEmpty()) {
            return null;
        }
        return list.get(list.size() - 1);
    }
}
