53 lines
1.7 KiB
C#
53 lines
1.7 KiB
C#
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/*
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M2Mqtt - MQTT Client Library for .Net
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Copyright (c) 2014, Paolo Patierno, All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3.0 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library.
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*/
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using System;
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using System.Collections;
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namespace uPLibrary.Networking.M2Mqtt
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{
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/// <summary>
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/// Extension class for a Queue
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/// </summary>
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internal static class QueueExtension
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{
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/// <summary>
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/// Predicate for searching inside a queue
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/// </summary>
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/// <param name="item">Item of the queue</param>
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/// <returns>Result of predicate</returns>
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internal delegate bool QueuePredicate(object item);
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/// <summary>
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/// Get (without removing) an item from queue based on predicate
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/// </summary>
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/// <param name="queue">Queue in which to search</param>
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/// <param name="predicate">Predicate to verify to get item</param>
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/// <returns>Item matches the predicate</returns>
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internal static object Get(Queue queue, QueuePredicate predicate)
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{
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foreach (var item in queue)
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{
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if (predicate(item))
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return item;
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}
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return null;
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}
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}
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}
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