45 lines
1.3 KiB
Java
45 lines
1.3 KiB
Java
/*
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* Copyright 2021 Paul Schaub.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.pgpainless.util;
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import java.lang.reflect.Array;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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public final class CollectionUtils {
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private CollectionUtils() {
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}
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public static <I> List<I> iteratorToList(Iterator<I> iterator) {
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List<I> items = new ArrayList<>();
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while (iterator.hasNext()) {
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I item = iterator.next();
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items.add(item);
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}
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return items;
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}
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public static <T> T[] concat(T t, T[] ts) {
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T[] concat = (T[]) Array.newInstance(t.getClass(), ts.length + 1);
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concat[0] = t;
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System.arraycopy(ts, 0, concat, 1, ts.length);
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return concat;
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}
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}
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