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annotate Chronosv2/source/Extensions/LinqExtensions.cs @ 12:6a0449185449

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SCC changed from TFS to HG
author stevenh7776 stevenhollidge@hotmail.com
date Tue, 21 Feb 2012 17:47:35 +0700
parents 443821e55f06
children 09d18d6e5f40
rev   line source
10
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1 /*
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2 The MIT License
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3
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4 Copyright (c) 2009-2010. Carlos Guzmán Álvarez. http://chronoswpf.codeplex.com/
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5
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6 Permission is hereby granted, free of charge, to any person obtaining a copy
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7 of this software and associated documentation files (the "Software"), to deal
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8 in the Software without restriction, including without limitation the rights
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9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 copies of the Software, and to permit persons to whom the Software is
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11 furnished to do so, subject to the following conditions:
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12
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13 The above copyright notice and this permission notice shall be included in
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14 all copies or substantial portions of the Software.
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15
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16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 THE SOFTWARE.
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23 */
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24
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25 using System;
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26 using System.Collections.Generic;
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27 using System.Linq.Expressions;
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28
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29 namespace Chronos.Extensions
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30 {
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31 public static class LinqExtensions
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32 {
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33 #region · Extensions ·
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34
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35 /// <summary>
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36 /// Traverses the specified source.
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37 /// </summary>
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38 /// <typeparam name="T"></typeparam>
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39 /// <param name="source">The source.</param>
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40 /// <param name="fnRecurse">The fn recurse.</param>
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41 /// <returns></returns>
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42 public static IEnumerable<T> Traverse<T>(this IEnumerable<T> source, Func<T, IEnumerable<T>> fnRecurse)
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43 {
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44 foreach (T item in source)
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45 {
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46 yield return item;
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47
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48 IEnumerable<T> seqRecurse = fnRecurse(item);
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49
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50 if (seqRecurse != null)
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51 {
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52 foreach (T itemRecurse in Traverse(seqRecurse, fnRecurse))
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53 {
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54 yield return itemRecurse;
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55 }
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56 }
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57 }
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58 }
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59
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60 #endregion
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61 }
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62 }