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annotate Chronosv2/source/Extensions/EnumerableExtensions.cs @ 10:443821e55f06

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author stevenh7776 stevenhollidge@hotmail.com
date Tue, 21 Feb 2012 17:25:44 +0700
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1 using System;
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2 using System.Collections.Generic;
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3
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4 namespace Chronos.Extensions
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5 {
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6 /// <summary>
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7 /// Extension methods for all kinds of (typed) enumerable data (Array, List, ...)
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8 /// </summary>
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9 public static class EnumerableExtensions
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10 {
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11 #region · Extensions ·
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12
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13 /// <summary>
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14 /// Converts all items of a list and returns them as enumerable.
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15 /// </summary>
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16 /// <typeparam name="TSource">The source data type</typeparam>
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17 /// <typeparam name="TTarget">The target data type</typeparam>
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18 /// <param name="source">The source data.</param>
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19 /// <returns>The converted data</returns>
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20 /// <example>
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21 ///
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22 /// var values = new[] { "1", "2", "3" };
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23 /// values.ConvertList&lt;string, int&gt;().ForEach(Console.WriteLine);
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24 ///
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25 /// </example>
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26 public static IEnumerable<TTarget> ConvertList<TSource, TTarget>(this IEnumerable<TSource> source)
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27 {
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28 foreach (var value in source)
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29 {
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30 yield return value.ConvertTo<TTarget>();
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31 }
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32 }
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33
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34 /// <summary>
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35 /// Performs an action for each item in the enumerable
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36 /// </summary>
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37 /// <typeparam name="T">The enumerable data type</typeparam>
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38 /// <param name="values">The data values.</param>
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39 /// <param name="action">The action to be performed.</param>
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40 /// <example>
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41 ///
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42 /// var values = new[] { "1", "2", "3" };
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43 /// values.ConvertList&lt;string, int&gt;().ForEach(Console.WriteLine);
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44 ///
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45 /// </example>
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46 /// <remarks>This method was intended to return the passed values to provide method chaining. Howver due to defered execution the compiler would actually never run the entire code at all.</remarks>
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47 public static void ForEach<T>(this IEnumerable<T> values, Action<T> action)
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48 {
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49 foreach (var value in values)
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50 {
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51 action(value);
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52 }
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53 }
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54
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55 #endregion
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56 }
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57 }