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40 lines
1.4 KiB
40 lines
1.4 KiB
/* Copyright 2017 Andrew Dawson
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.util;
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import androidx.annotation.Nullable;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.LinkedHashSet;
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import java.util.List;
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public class ListUtils {
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/**
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* @return true if list is null or else return list.isEmpty()
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*/
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public static boolean isEmpty(@Nullable List list) {
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return list == null || list.isEmpty();
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}
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/**
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* @return a new ArrayList containing the elements without duplicates in the same order
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*/
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public static <T> ArrayList<T> removeDuplicates(List<T> list) {
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LinkedHashSet<T> set = new LinkedHashSet<>(list);
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return new ArrayList<>(set);
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}
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}
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